The Thursday night slaying of a couple in Ridgewood, Queens appears to be drug-related, a law enforcement official said Friday.

Police responding to a 911 call at about 6:30 p.m. found Natalie Mejia-Tavares, 21, and Louis Oscar Padilla-Lopez, 22, dead from gunshot wounds inside their 1815 Summerfield St. apartment, according to the NYPD.

Mejia-Tavares had been shot in the torso; Padilla-Lopez in the head, police said.

Padilla-Lopez was arrested last year in Nassau County on various charges, including DWI, disorderly conduct and obstructing governmental administration, officials said.

The Nassau case against him was pending when he died, said a spokesman for the county district attorney's office.

Padilla-Lopez also had two arrests in Queens, one for criminal mischief and another for possession of a controlled substance, police said.

Queens prosecutors declined to comment on the cases.

NYPD Commissioner William Bratton said Friday that "a lot of time and effort" is going into the homicide investigation. As of Friday afternoon, no arrests had been made.

Bratton said the motive remains unclear, but a law enforcement official later said the shootings appear to be over illicit drugs.

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