The explosion happened shortly after 5 p.m. at a duplex on 75 Filmore Street.
PHILLIPSBURG, NJ HOUSE EXPLOSION 74 FILMORE ST pic.twitter.com/jmTShtJZ1x— Northeast Bravest® (@nebravest) June 4, 2016
One of the victims went to Cedarcrest Hospital with severe burns over 50 percent of his body. The second victim had just a scratch on his face.
There were two people inside the duplex when the explosion occurred. Many surrounding houses were damaged, and had their windows blown out.
Officials do not yet know the the cause of the explosion.
The surrounding area was evacuated.
Mayor Stephen Ellis says authorities smelled gas in the area.
The Red Cross says it's assisting nine people in three families who were displaced by the blast.
(Some information from the Associated Press.)