He Sat Down on a Park Bench on Labor Day. Three Minutes Later, He Was Dead.

It was Labor Day morning in Round Rock, Texas. Andrew Wimsatt sat down on a park bench just before 11 a.m. Three minutes later, a neighbor's security camera shows a stranger walking up behind him — and Wimsatt never got up again.

According to the arrest affidavit, a Homeowners Association camera near Chandler Creek Park recorded a man approaching Wimsatt from behind, wrapping an arm around him, and stabbing him repeatedly, including in the neck. Wimsatt tried to push him away. He couldn't. The attacker wiped the blade on his own shirt and ran toward the park's pool area.

Investigators pieced together where he went next from a chain of other cameras: home security video showing him on foot near the park that morning, then footage from a nearby McDonald's showing him hours later in different clothes, getting into a red SUV.

Wimsatt was 62. He held bachelor's, master's and doctoral degrees from the University of Texas at Austin and worked as a research engineer at the Texas A&M Transportation Institute, after years at the Texas Department of Transportation as a pavement engineer. He was the son of the late James Wimsatt, a UT Austin professor emeritus, and is survived by his mother and a brother and sister. People who knew him described a quiet, kind man who was into indie rock and metal, had just released an album of his own instrumental music, and spent time on nature photography.

Investigators recovered a white trash bag containing a black shirt, grey sweatpants, black shoes, and a 5.5-inch knife with a wooden handle; the sweatpants tested positive for what presumptively appeared to be blood, as did the blade. A palm print was lifted from a water fountain near the park's basketball court.

On September 9 — two days after the killing — Williamson County deputies arrested 26-year-old Benedict Chinedu Ogbodiegwu Jr. of Round Rock and charged him with first-degree murder. The Williamson County Sheriff's Office said Wimsatt and Ogbodiegwu did not know each other and described the attack as random. Ogbodiegwu is being held on a $1,000,000 bond.

Court records show Ogbodiegwu had been arrested at least three times before, including once in May 2026 on a charge of giving false identification to police. Each of those earlier cases was dismissed.

Ogbodiegwu faces a first-degree murder charge with no trial date yet set. The Sheriff's Office says the investigation is ongoing. For now, what's confirmed is narrow but stark: two strangers, a park bench, and three minutes caught on a neighbor's camera.