Police brought several people in for questioning and searched for clues Monday in the shooting deaths of four teenagers on the morning after the prom.

The teenagers were killed early Sunday in the front yard of the apartment house where one of the victims lived.

Police said they did not know the motive for the killings.

No immediate arrests were made, but nine people were brought in for questioning, Capt. Steve Hall said.

The victims were Dante Ward (search), 19, who lived in the apartment building; Eddrick Clark, 18; Michael Dillon, 17; and Megan Poston, 16. Poston was Dillon's date to his high school prom Saturday night. Authorities have not whether the two other victims attended the prom.

A neighbor said he and his daughter were awakened by gunshots and a girl pleading for her life.

"There was a burst of gunfire, and then there was a small pause, and that's when I heard the girl say, 'Please don't kill me, I'm sorry,'" Michael Thomas said. "And I heard two more gunshots."

Thomas added: "You send your kids to the prom and you just hope they don't drink and drive. You'd never expect they're going to get murdered in cold blood."

Dillon's father, Garry Dillon (search), said he had no idea why his son and Poston were at Ward's house. "I just hope the police get the monster that did this to those babies," he said.