TEHRAN, Sept. 24 (Xinhua) -- Iranian Intelligence Ministry announced Monday that its forces have arrested a number of suspects believed to be behind the recent terror attack on a military parade in the southern country.

"We will bring to justice each one of the terrorists," Mahmoud Alawi, intelligence minister, was quoted as saying by Tasnim news agency.

"A number of elements behind the incident have already been detained by the security forces," Alawi said.

At least 25 people were killed and 60 others were injured in a terror attack on a military parade in the southern Iranian Ahvaz city on Saturday. Military forces and civilians were among the killed.