Iraqi police say at least 13 people have been killed in a bomb blast in central Baghdad, in the latest violence to hit the country.
Security officials say more than 50 others were injured Friday when a bomb planted on a motorcycle exploded at a market.
Reports say the booby-trapped motorcycle filled with nails and ball-bearings went off around mid-morning, when the market was crowded with shoppers.
Speaking Friday in Washington, U.S. President Barack Obama said despite recent bombings in Iraq, the security situation has improved. The president said the situation will be further improved if the Shi'ites, Sunnis and Kurds can resolve some of their major political differences.
Friday's attack in the capital comes just four days before U.S. forces are set to pull out of Iraqi cities. U.S. and Iraqi leaders expect a rise in violence as U.S. forces prepare to leave.
But a top U.S. commander in northern Iraq said the Iraqi government has agreed to allow some foreign non-combat troops to stay in the city of Mosul after June 30.
Major General Robert Caslen said the troops will only remain in five of the city's districts to support the Iraqi forces.
Wednesday, at least 76 people were killed in an explosion at a market in Baghdad's mostly Shi'ite district of Sadr City. A truck bombing last Saturday near Kirkuk killed nearly 70 people.
Police say the death toll for this month has already exceeded the figure of 155 Iraqis killed in May.