By Steve Beck and Al Novack

MARCUS HOOK, Pa. (CBS) – Officials are investigating the cause of an apartment fire in Delaware County early Wednesday morning.

The fire started at about 6 a.m. inside an apartment in the 500 block of Market Street in Marcus Hook.

According to fire officials, two residents of the apartment were safely removed by firefighters. There were no reports of any other injuries.

The fire was placed under control in less than 15 minutes.

The exact cause of the fire remains under investigation.