Authorities searched on Thursday for the person who set a fire that killed a Memphis firefighter and sent three others to the hospital.

The Memphis Fire Department said arson was to blame for a fire late Tuesday that killed Lt. Jeffrey Norman and injured three other firefighters when they were trapped inside a burning house.

The blaze started in a trash bin located outside of the house, fire officials said in a news release Thursday. It spread to a carport and into an addition to the home above the carport.

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Injuries suffered by Norman and the three firefighters who were hospitalized have not been disclosed.

Fire officials asked the public to help identify the person who set the fire.

Norman, a 20-year veteran firefighter, was "a courageous and dedicated member of our team," Memphis Fire Chief Gina Sweat said in a statement.

"Jeffrey was a leader and hard worker who took pride in serving his community," Sweat said Wednesday.