The three suspects charged with the killing of a 9-year-old Mobile girl who are also the prime suspects in a drive-by shooting earlier that same night, according to court filings.

Cailee Knight was shot dead while she slept on a couch inside her home on Rhett Drive Dec. 5, with the fatal shot or shots fired from outside the home.

Investigators say 19-year-old Tyrone Deairus Williams and 18-year-old Darius Janoski Lucky Jr. fired separately into the home, while 22-year-old Arieal Rapheal Curry drove the vehicle in which the three suspects were riding.

During last week’s city council meeting, Mobile chief of staff James Barber said Cailee Knight was shot with an AR-15 rifle.

Court documents indicate Williams fired a 9mm handgun, supporting prosecutors claims that two separate weapons were used. It was not immediately known if investigators have recovered either or both of the weapons.

Mobile County District Attorney Keith Blackwood said investigators believe the shooting was the result of a relationship “gone awry” and Barber said the target of the shooting was Cailee Knight’s 16-year-old brother.

Blackwood has also said they believe there was a “gang component” involved and as a result his office will seek enhanced penalties against the three defendants under a new law which went into effect in September.

Court records also indicate Williams, Lucky and Curry are suspects in a drive-by shooting earlier that same night. Police responded to a report of a shooting on Racine Drive about 12:30 a.m. — roughly 90 minutes prior to the shooting which killed Cailee Knight.

The documents say Joshua Johnson occupied the home where the earlier shooting occurred, although it’s unclear if Johnson was the actual target.

Williams, Lucky and Curry each entered pleas of not guilty in Mobile District Court Monday. All three are being held in the Mobile Metro Jail without bond pending a Friday hearing on the prosecution’s request for application of Aniah’s Law, which allows a judge to order violent suspects held without bond while awaiting trial.