Officials hope two rewards will lead them to whomever set a handful of fires in a Temple University dorm complex.

Three fires were set Monday morning and two Tuesday at the construction site for Morgan Hall on the corner of Broad Street and Cecil B. Moore Avenue, authorities tell NBC10.

The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) is offering up to $5,000 for information leading to the arrest and conviction of those who set the fires. Several cars brandishing ATF placards in their windows were seen outside the construction site today.

Construction manager L.F. Driscoll is offering a second reward up to $10,000 -- bringing the total reward to $15,000, according to the ATF.

Morgan Hall is a $216 million residence hall and dining complex that's set to house more than 1,200 students. The complex features a 24-floor tower and 10-floor building. Construction is expected to be finished this August, according to Temple University.

All five fires were set in the tower on the 13th through 20th floors, the ATF said.

Philadelphia Police, Philadelphia Fire Department, Temple University Police and the ATF are investigating.