Security officials examine the site of a car bomb Saturday in the Suez Canal city of Ismailia, Egypt.

Six soldiers were wounded in a military intelligence compound, security officials said, as militants appear to be expanding the scope of attacks beyond the restive Sinai Peninsula.

The blast in Ismailia came as some returned to work after the major Muslim holiday of Eid al-Adha. Security officials said part of the compound’s wall collapsed and a nearby commercial building, belonging to the Suez Canal Authority, was damaged.

Ismailia borders the restive Sinai Peninsula, where the military is on the offensive against insurgents who frequently target Egypt’s security forces.