Suspected Kurdish guerrillas set off a remote controlled bomb on Friday as a convoy of the police chief of an eastern city was passing, local media reported.
The police chief and his entourage survived the attack in the eastern city of Tunceli unharmed, CNN-Turk and NTV televisions reported.
"We hope the level of cooperation from the United States against the guerrillas will increase," Foreign Minister Abdullah Gul said. "It is not at the desired level right now."
"We have the right to expect help from the United States in Iraq against the guerrillas," he said.