BAGHDAD (AFP/Reuters) - A small roadside bomb narrowly missed a vehicle carrying the US ambassador to Iraq in the south of the country, the US embassy in Baghdad said on Monday. The attack on the convoy carrying Christopher Hill and other US embassy personnel occurred in the largely peaceful Shiite province of Dhi Qar in southern Iraq on Sunday, but no passengers were hurt. An explosive device detonated near a convoy carrying American embassy personnel, including the ambassador, on July 12 in Dhi Qar province, embassy spokeswoman Susan Ziadeh said. No personnel were injured or hurt. An investigation into the incident is taking place, she said, without giving further details. The American daily USA Today said its reporter was a few minutes behind Hill in a separate convoy at the time. There was a bang and we Aside from the four killed, 32 other people were wounded in the seven attacks over a 48-hour period, leading to streets being cordoned off in Baghdad and a curfew being imposed in two predominantly Christian towns close to Mosul. In eastern Baghdad, the area around the Sacred Heart church was sealed off by police and soldiers as a truck began picking up the charred wreckage of cars destroyed by the bomb blast. No cars were allowed to park near the cordon, and police questioned anyone who wanted to enter the street. Along with the four Christians killed, 21 people were wounded in the attack, 15 of them also Christians. A police officer outside the church told AFP that the bomber had pushed his 1980s Volkswagen Passat in front of the building after convincing nearby security guards that it had broken down. He then told them that he needed to get a mechanic and some fuel and disappeared, and the bomb later exploded, shattering the churchs windows, blackening its walls and destroying nearby cars. Curfews were also imposed in Hamdaniyah, east of Mosul, and Talkif to the north. We are not allowing cars or people to enter or exit, a security official said. The restrictions came into place at 6:00 am (0300 GMT) after information about possible car bombs in the area. On Monday, meanwhile, one person was killed and 10 others, including four policemen, were wounded by a roadside bomb targeting a police patrol in Baghdads central shopping district of Karrada, security officials said. Also on Monday, seven US soldiers and their Iraqi translator were injured by a bomb in the northern Iraqi city of Al-Sharqat. Vice President Adel Abdul Mahdi has urged Iraqs Christian minority not to flee the violence-plagued country and urged the international community to help protect it from extremists. According to Christian leaders, 250,000 of the 800,000 Christians who lived in Iraq before the US-led invasion of 2003 that ousted president Saddam Hussein have now left the country.