WESTWEGO, La. -- A 38-year-old man is facing second-degree murder charges in connection with the drug-overdose death of his teenage son in a Westwego motel room.

The suspect, Paul Breaux, address unknown, was booked Monday with second-degree murder after he allegedly gave his son two injections of the pain-killing drug OxyContin.

Police initially investigated 17-year-old Derrick Breaux's death as a self-administered drug overdose, Westwego Police Chief Dwayne Munch said.

Munch said that police became suspicious when they discovered that Paul Breaux did not call 911 Sunday morning until after he got his wife and two younger children out of the motel room in which they were staying.

Investigators said that Breaux and his wife spent Saturday night at a Westwego motel abusing the painkilling drug in front of their children, ages 3 and 7.

Investigators said that when Derrick Breaux arrived, Paul Breaux injected the teenager with the drug.

"The father allegedly put the OxyContin in his sock and put the syringe in his shoe, so that would put all of the blame on the young boy who had passed away," Munch said.

The teenager did not wake up Sunday morning. Investigators said that Breaux has denied any involvement in his son's death.

Breaux and his wife, Roxanne Breaux, also face charges of illegal drug use in front of juveniles and improper supervision of the couple's young children, who were in the room when drugs were being used, Munch said.