Six people were sent to the hospital following a Monday morning apartment fire in Fordham Heights, according to the FDNY.

Fire officials say the fire started on the fourth floor of the Twin Parks South West building on Valentine Avenue around 7 a.m. Six people were sent to the hospital and their conditions remain unknown at this time.

Firefighters were able to put out the flames in just under an hour. Fire marshals are still working to determine the cause of this fire.