A man sexually assaulted a woman in an emergency room in Harlem after she fell asleep, then urinated on her when she was startled awake, police said.

The 45-year-old woman fell asleep after being treated in the Harlem Hospital emergency room for an injured foot Friday afternoon, according to the NYPD. She awoke to find a man allegedly assaulting her.

He then began to urinate on her, police said.

Hospital police were called and they arrested the assailant, 49-year-old Tyrone Brown, who was being treated for an unknown injury, according to the NYPD. He faces a charge of criminal sex act, a felony.

Attorney information for Brown wasn't immediately available.

A message was left with the hospital.

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