PHILADELPHIA (CBS News) — Federal and local authorities are investigating after an explosion rocked Center City early Tuesday morning.

Police rushed to the 1800 block of Pine Street when a suspicious package exploded inside a man’s apartment.

A high-ranking official within the Philly Police Department tells CBS News that the suspicious package was in fact a device, that it was victim activated and came in a manila envelope.

CBS 3 has identified the victim has 60-year-old Jim Alden.

Chief Inspector Scott Small says the explosion occurred inside the kitchen where the man lives.

“There’s some broken glass, there’s some damage to the range where you would cook, there’s some blood, but there’s not a lot of structural damage at all inside the property,” Small said.

According to CBS 3, a box with a bar code was placed on the steps in front of the building. When the victim decided to open the package Tuesday morning it exploded.

Authorities say the package had a power source and loop switch. When it detonated there was a smell of Sulfur in the apartment.

The victim was transported to Jefferson Hospital after suffering injuries to both hands, face and upper body. He’s listed in stable condition.

The Philadelphia Police, Bomb Squad, the ATF and other agencies continue to investigate this incident, but say there’s no threat to the surrounding area.

“All of the other mailed packages that we initially thought were suspicious have been cleared,” Small said. “There no thereat now of anything else exploding.”

Sources say police are talking to the victim and his partner and looking at everything, including the possibility of this being a hate crime.

This incident is not believed to be terrorism, authorities say.