A man was burned in a Christmas morning fire that heavily damaged a split-level home in Silver Spring, the Montgomery County fire department said.

Five additional people were displaced by the fire, which caused an estimated $750,000 in damages.

Asst. Chief Scott Graham, a department spokesman, said on Twitter that the injured man was driven to a hospital before firefighters arrived. He did not say how seriously the man was hurt.

The other occupants escaped safely, and Graham said two fighters suffered minor burns while fighting the blaze and were taken to a hospital.

Firefighters tried for more than an hour to extinguish the flames and, at one point, were ordered to evacuate because of concern that the structure might collapse, according to fire commanders talking on their radios.

Officials said the fire appears to have been concentrated on the first floor of the two-story house.

The fire was reported about 8:15 a.m. in the first block of Narrows Court, near the Sandy Spring area. The short, dead-end road is tucked away in a wooded subdivison adjacent to Norwood Park.

A cause of the fire has not yet been determined. Neighbors could not be reached for comment Wednesday morning.

Maryland tax records show the owners bought the house in March 2012.

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