DALLAS (AP) — A suspect has been arrested on murder warrants for two slayings in Dallas, another slaying in nearby Celina and is a suspect in another fatal Dallas shooting, according to assistant Dallas Police Chief Avery Moore.

On Friday, Moore said Jeremy Rashaud Harris, 31, was arrested for the death of a man found in a burning home in Celina on the northern edge of Dallas.

Harris, who was arrested Wednesday, is now jailed in Collin County on murder warrants for the Celina slaying and the fatal Nov. 14 shootings in Dallas of a panhandler and a man sitting in his car at a stoplight, according to Moore.

Jail records show Harris is being held on $3 million bond and do not list an attorney who could speak on his behalf.

Harris is also a suspect in the Oct. 31 fatal shooting in Dallas of a 19-year-old college student who was awaiting a ride home from a party, said Moore.

The Dallas shootings are believed to have been committed by a lone gunman and were random, said deputy Police Chief Reuben Ramirez, who heads the department’s criminal investigations division.

“I believe this is the definition of a serial killer,” Ramirez said.