(Adds background) MOSUL, Iraq, Jan 15 (Reuters) - A suicide car bomber killed at least five people and wounded 28 more in an attack on an office of the Kurdistan Democratic Party (KDP) in the northern city of Mosul on Monday, police and a Kurdish official said. Police said the number of civilian casualties was four dead and 26 wounded. Lieutenant Ahmed Zebari, a military officer with links to the KDP, said inside the office one more person was killed and another two wounded. They were taken to a different hospital. The KDP is one of the two ruling parties in nearby Kurdistan, in northern Iraq. With a mixed population of Sunni Arabs and ethnic Kurds, Mosul has long been a flashpoint of violence. The KDP has offices in Mosul, Baghdad and other cities outside Kurdistan to represent Kurds' interests there.
