Melvin Smith, suspect in Frederick slaying, captured in Pennsylvania

A man suspected of fatally shooting a Frederick woman has been arrested in Pennsylvania.

Police say 27-year-old Melvin “Rock” Smith was taken into custody in Mckeesport, Pa. Thursday. He will be extradited back to Maryland where he will stand trial in the brutal July 8 slaying of 33-year-old Tranice Richardson.

Investigators say the two had been romantically involved.

Melvin Smith, suspect in Frederick slaying still at large

FREDERICK, Md. (ABC7, AP) - Police in Frederick say the suspect in a fatal shooting remains at large three days after the incident.

Frederick resident Vaughn Davis says he saw Tranice Richardson out with her 8-year-old son around 7:30 Friday night, when the gunfire erupted off Orchard Terrace.

"I heard 'call the police, call the police'... He just kept shooting her, gunning her down, and ran off,” he said.

Another witness says the 33-year-old Richardson tried to push her son out of harm's way, telling him to run.

Then, the witness says the gunman shot her multiple times.

"He's standing over her body, pulling back...already two shots that went off, and then he shot her two more times in the head."

Police have identified the gunman as 37-year-old Melvin 'Rock' Smith. Court records show that he fathered at least one of her four children. Lt. Clark Pennington says Smith and Richardson were romantically involved.

Richardson's family says she was terrified of Smith, and had filed a court protection against him in 2007.

She met with her father the night before she was killed.

"She said she was scared for her life", Cedric Richardson says. "She said he was stalking her and the kids. Next day, that's when I got the call."

Police say Smith was convicted of manslaughter for fatally shooting a man in Baltimore in 2000. Smith, 16 years old at the time, was sentenced to five years in prison.

He also pleaded guilty to possession of narcotics in 2006 and heroin in 2010. Smith also received a 30 month sentence after pleading guilty to escape in 2006.

Police are interviewing witnesses and following leads. Anyone with information is encouraged to contact Frederick Police.

Smith is considered armed and dangerous. Police say if you see him, you should not approach, but contact authorities immediately.