A total of 28 Iraqis were killed Wednesday in two separate bombings in the country, raising fears about a renewed spate of violence, dpa reported.
At least 15 army soldiers were killed and 20 injured in a bombing some 120 kilometres west of the capital Baghdad, according to an Iraqi security source.
The bomb, which had been planted in a vehicle at a military airport in the town of Ramadai, exploded as the soldiers were having breakfast, the source said.
Hours later, some 13 civilians were reportedly killed in a car bombing in the town of Hilla, some 100 kilometres south of Baghdad.
The car exploded outside a restaurant, also leaving 42 injured, many of them in serious condition, according to police and medical sources.
On Monday night, at least 22 people returning from a pilgrimage in Syria were murdered by an unknown armed group in western Iraq. The gunmen hijacked a bus carrying about 30 Shiite pilgrims as they returned to the southern Iraqi city of Karbala.
The gunmen released women and children unharmed before killing 22 men on the bus, police said.
No one has claimed responsibility for the attacks.
Violence in Iraq has declined significantly since its peak in 2006, although fear of instability persists as gunmen carry out targeted assaults, especially on security and army forces.