Another passenger of the doomed discount bus that crashed in the Bronx has died, bringing the death toll in the horrific highway wreck to 15, police said Monday.

The fifteenth victim, a 70-year-old man, died of his injuries shortly after 7 a.m.

A police source confirmed to the Daily News that a fifteenth victim died, but could not provide further details. None of the victims have been identified.

Federal agents probing the cause of the Bronx crash were poring over the coach’s “black box” and onboard videotape Sunday night. [NY Daily News]