Man scales outside of 19-floor apartment building to escape fire in Philadelphia

A man seen scaling the outside of a 19-story apartment building to escape a fire in Philadelphia on Thursday night made it to ground level unharmed.

Four residents and three police officers were injured, ABC Philadelphia station WPVI reported.

Fire crews are investigating the cause of the blaze, which began around 9:30 p.m. in the 4400 block of Holden Street.

The fire may have begun in a trash compactor, according to WPVI.

The building was evacuated, but several residents remain unaccounted for.