A 43-year-old Iranian military officer was shot to death on Saturday by two motorcyclists in the city of Khorramabad, local media reported.
Another soldier was injured in the incident. The two assailants fled the scene, according to reports.
The incident occurred when the motorcyclists fired shots at a group of soldiers who were on their way to an air force base located near the city, Israel's
Channel 2 reported.
The local head of security forces said the incident occurred at 6:30 am. "The search for the assailants continues, and we have launched an investigation into the circumstances of the incident," he said.
A senior official in the Lorestan province, where Khorramabad is located, said that according to eyewitnesses "many bullets were fired at the soldiers, causing great panic in the area."
The Mehr news agency said the killed mid-level officer was identified as Raze Ali Fimani.
Saturday's incident occurred just 10 days after Professor Mostafa Ahmadi Roshan,
an Iranian nuclear scientist, was killed when motorcyclists attacked a bomb to his car in northern Tehran.
In October 2010 18 Revolutionary Guard members were killed and a number of others were injured during an explosion
at a military base near Khorramabad, located some 480 kilometers (about 300 miles) southwest of Tehran.
Iran said the blast was the result of a fire in a munitions warehouse, but a few weeks later French daily Le Figaro speculated that Mossad was responsible for the explosion, which it claimed was part of a series of covert operations Israel launched to hinder Iran's nuclear program.