Truck computer contains clues to motive in murder, prosecutors say

Authorities in Greenwood, South Carolina, successfully prosecuted Bud Ackerman for murder following the fatal May 7, 2023, vehicular collision that killed 46-year-old Davis McClendon, relying heavily on computer data extracted from the suspect's pickup truck to establish criminal intent.

The incident occurred at a deserted intersection in Greenwood County shortly after 1 a.m., where responding deputies discovered McClendon's damaged BMW sedan and his body lying on the road shoulder. Prosecutors used vehicle telemetry and digital forensics to prove Ackerman acted with malice aforethought.

Incident Overview

According to official reports and court disclosures from the Greenwood County Sheriff's Office, emergency personnel responded to a quiet intersection after 1 a.m. on May 7, 2023. Upon arrival, first responders encountered a heavily damaged BMW sedan in the roadway with debris scattered across the pavement. Approximately 50 feet away, near the wooded shoulder, officers located 46-year-old Davis McClendon suffering from fatal injuries. Physical evidence, including McClendon's shirt and shoe on the asphalt, indicated he was standing near his driver's door when struck.

Investigators observed that no other damaged vehicle remained at the scene. However, McClendon's girlfriend, Meredith Haynie, arrived shortly after law enforcement officers reached the area. She told deputies she had not seen the collision but noted McClendon abruptly left a local club, Key West, at 12:51 a.m. Haynie explained she suspected McClendon was meeting her estranged husband, Bud Ackerman, who opposed their relationship prior to their divorce being finalized.

Timeline of Events

1. Late Evening, May 6, 2023: Davis McClendon and Meredith Haynie attend a date starting at Break on the Lake restaurant, later arriving at Key West club in Greenwood.
2. 12:51 a.m., May 7, 2023: McClendon exits Key West club through the back door following repeated calls from Bud Ackerman.
3. 1:11:33 a.m., May 7, 2023: Dashboard infotainment data from Ackerman's Ford F-250 records a wheel slip event at a neighborhood intersection, marking the moment of impact.
4. 1:11 a.m. (Seconds Later): Telemetry records show the pickup stopping, shifting to park, the driver door opening and closing, and shifting back into drive.
5. After 1:00 a.m., May 7, 2023: Greenwood County Sheriff's Office deputies respond to the scene, locate McClendon's body, and trace a leaking oil trail leading to Ackerman's residence.

Suspect Information

Bud Ackerman was identified as the suspect and driver of the Ford F-250 pickup truck involved in the fatality. At the time of the incident, Ackerman was in the process of divorcing Meredith Haynie and lived half a mile from the crash site in Greenwood. Prosecutors presented evidence showing Ackerman harbored animosity regarding the victim's relationship with Haynie.

Victim Information

The victim was 46-year-old Davis McClendon, a Greenwood resident and owner of the BMW sedan found at the scene. McClendon sustained fatal injuries when struck while standing near the driver's side of his vehicle. He had been out on a date with Haynie earlier that night.

Police Response

Greenwood County Sheriff's Office deputies arrived at the intersection shortly after receiving emergency dispatches after 1:00 a.m. Responding officers secured the crash site, requested emergency medical assistance, and processed physical evidence. Officers quickly identified a continuous line of engine oil leaking from the impact site toward a nearby residential driveway.

Investigation

The investigation was led by Lt. Matthew Womack of the Greenwood County Sheriff's Office. Detectives examined phone records provided by Haynie, confirming frequent calls and messages sent by Ackerman. Officers secured surveillance video showing Ackerman's vehicle near locations visited by the victim. Law enforcement subsequently obtained a search warrant for Ackerman's Ford F-250 pickup truck, extracting detailed electronic control module and infotainment system data that provided second-by-second diagnostic, positional, speed, braking, and control logs.

Evidence Collected

• Physical Vehicle Debris: BMW sedan fragments scattered at the crash scene.
• Victim Effects: McClendon's shirt and shoe recovered from the asphalt.
• Fluid Trail Evidence: Engine oil trail leading from the collision site to Ackerman's driveway.
• Phone Records: Messages and call logs showing repeated contacts from Ackerman.
• Surveillance Video: Video establishing Ackerman's presence near the victim's locations.
• Vehicle Telemetry: Over 3,000 time-stamped infotainment events, including Wi-Fi pings, speed, acceleration metrics, braking logs, gear shifts, door sensor activations, and Bluetooth connectivity records.

Arrest Details

Deputies located Bud Ackerman at his parents' home, approximately half a mile from the crash site, within hours of the incident on May 7, 2023. His Ford F-250 was parked in the driveway actively leaking oil. Upon being approached by law enforcement, Ackerman declined to answer questions and referred officers to his legal counsel before being taken into custody.

Charges Filed

Bud Ackerman was charged with murder committed with malice aforethought under South Carolina law. Legal statutes governing this charge include:

• Murder (Malice Aforethought): Under South Carolina Code § 16-3-10, murder is defined as the unlawful killing of any person with malice aforethought, express or implied. Express malice indicates a deliberate intent to unlawfully end a human life, whereas implied malice exists when no considerable provocation appears. Conviction carries a mandatory minimum penalty of 30 years in state prison up to life imprisonment without parole.
• Prosecutorial Standards: To secure a conviction for malice aforethought murder in a vehicular context, prosecutors must prove beyond a reasonable doubt that the defendant utilized the vehicle as an intentional weapon rather than causing death through accidental or reckless operation.

Court Information

The case was tried in South Carolina state circuit court in Greenwood County. Defense attorney Jack Swerling contended the collision was an accidental crash occurring in the dark while Ackerman attempted to stop his truck by striking the parked BMW. Following a seven-day jury trial, the jury convicted Ackerman of murder. The trial judge sentenced Ackerman to 45 years in state prison.

Statements from Authorities

Lead detective Lt. Matthew Womack highlighted how digital forensics established the timeline and established intent. Regarding the data extraction, Lt. Womack noted: 'In a 24-hour time period, it's over 3,000 events... And then each one is time-stamped... for each event.' Womack explained that modern infotainment systems log extensive operational details: 'It told you... speed, um, it told you the braking. Whenever he shifts the gears, when he opens the door, when he connects his phone, when he disconnects his phone... I mean, it tells you a lot of information.'

Public Safety Information

Law enforcement authorities advise the public to report incidents of harassment, persistent unwanted contact, or stalking behavior to local police prior to dangerous confrontations. In emergency situations or personal safety threats, individuals should immediately contact 911. For individuals facing domestic disputes or relationship safety concerns, confidential resources are accessible 24 hours a day. The National Domestic Violence Hotline offers confidential assistance by phone at 1-800-799-7233 (SAFE) or via text by sending 'START' to 88788.

What Happens Next

Following conviction and sentencing in circuit court, the defendant is remanded to the custody of the South Carolina Department of Corrections to serve the 45-year prison sentence. Under state post-trial procedure, the defense may file formal post-trial motions or lodge an appeal with the South Carolina Court of Appeals. The appellate review process evaluates procedural rulings, legal motions, and evidentiary decisions made during trial. Barring successful post-conviction relief or appellate intervention, the sentence stands as ordered.

Source Attribution

This news report was compiled from official statements, police records, court proceedings, and press coverage from CBS News Crime (cbsnews.com). All investigation details and telemetry data were provided by the Greenwood County Sheriff's Office and South Carolina prosecutors.