A car fire and explosion in the Bronx was sparked by a tossed cigarette that was blown into trash, officials say.

Four people were found dead Wednesday morning inside an apartment building in the Bronx, law enforcement sources said. The bodies were discovered around 9:45 a.m. at the Castle Hill Houses on Lacombe Avenue,

The teen was blasted in the back around 9:30 a.m. at East 161st Street and Forest Avenue, part of NYCHA’s William McKinley Houses in Morrisania, police said.

Thousands of residents at the JP Mitchel Houses NYCHA complex in the Bronx have been without cooking gas for over a month.

A 15-year-old girl from New Jersey was sexually assaulted and kidnapped after she took a car service to New York City to meet a man who is a convicted sex offender, authorities said. The NYPD charged William Credle, 24, of the Bronx with rape, unlawful imprisonment, assault, sexual abuse and harassment, according to an email to NJ Advance Media.

A 16-year-old Bronx boy was shot in the back while trying to run away from a group of masked assailants, police and witnesses said Friday.

Four people were found dead in a suspected murder-suicide inside a Bronx apartment, according to a police source.

William Credle allegedly lured a 15-year-old girl to his home and raped her — less than two years after being charged with a hauntingly similar attack.