A Bronx woman was strangled to death by her boyfriend during a fight about his coming home late, police sources said.

Alexis Beck, 48, was found dead inside the rear bedroom of his apartment on East 221 Street near White Plains Road in Eastchester around 6:20 p.m. Sunday, cops said.

Her boyfriend, Christopher Coachman, 50, was arrested after he admitted to police that he was involved in the death, sources said.

Coachman was charged with murder and strangulation, cops said.