Authorities said Friday, that a scond man, identified as Charles Gamble, 24, was arrested and charged with assisting in the murder and cover-up of three people, discovered in a drainage pipe near a downtown apartment complex.

According to Columbia Police Chief Dean Crisp, all three victims had been attacked at a nearby apartment and then moved to the drainage pipe. A woman had been stabbed to death and two men fatally shot. Charles Gamble, was the woman's ex-boyfriend and father of her young child.

Jeremal Doreal Robinson, 21, of Columbia was also arrested and has been charged as an accessory and with obstructing justice.

Crisp said, "We're confident that we have the man that committed the murders. We're confident also that we have the individual who assisted him after the act in moving the bodies."

The victims, now identified as Charlene Octavia Yarbrough, 19, Marcus Antonio Wilson, 26, and Marquis Mitchell, 25. Investigators were reviewing several potential motives including a possible domestic dispute, police said.

A resident of the apartment complex, Rodrena Patrick, 20, said Gamble had been living there until he and Yarbrough got into a fight about a month ago. The couple's child had been taken into protective custody.

Gamble, who was on probation for a stalking conviction, has a criminal record dating back to a 2000 grand larceny charge, Crisp said.