THE BRONX - Fire officials say an Arthur Avenue fire injured three people, including a firefighter, early Sunday morning.

The fire broke out at 18-76 Arthur Avenue in apartment 'A' on the first floor of the building just before 11:30 a.m.

Fire officials say they believe the fire is a case of arson.

All three people were taken to Jacobi Medical Center. One of them is in serious condition. The investigation is still ongoing, according to officials.