Story highlights Police release victims' names

Lester said she was trying to leave an abusive relationship with Dearman

(CNN) The man who police believe killed five adults and an unborn baby in Citronelle, Alabama, will be charged with six counts of murder, the Mobile County district attorney said Sunday.

Derrick Ryan Dearman, 27, turned himself to police in his home state of Mississippi Saturday, hours after he entered the home where his girlfriend was staying with relatives and attacked the people sleeping inside using "firearms and several other weapons," according to a statement from the Mobile County Sheriff's Office.

A 3-month-old baby of one of the victims survived the attack.

"In... a 20-year career as a prosecutor, I have never seen a scene where there were five people brutally and viciously murdered. That's what we have here," Mobile County District Attorney Ashley Rich told CNN affiliate WALA

After the killings, police say Dearman kidnapped his girlfriend -- Laneta Lester -- and the surviving baby.

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