Firefighters hospitalized after Minneapolis duplex fire

MINNEAPOLIS (KMSP) - Two firefighters are recovering after trying to put out a house fire in Minneapolis Sunday night. 

The fire started around 11:30 p.m. at a duplex near 30th Avenue and 3rd Street North. 

One firefighter was checked for a neck injury after insulation fell on his head. He has returned to duty. A second firefighter was hospitalized for a cardiac issue. That firefighter's condition is unknown. 

No other injuries were reported. 
     
Officials believe the duplex was vacant. 

The cause of the fire is under investigation.