BAGHDAD, May 13 -- Up to 50 people were killed and 115 others injured in a suicide truck bomb attack on a Kurdish party headquarters in the northern Iraqi town of Makhmour on Sunday, Kurdish senior official said.

"Our latest report said that 50 people were killed and 115 others injured, some of them are in critical conditions," Ziyan Uthman, Health Minister of the Kurdish autonomous government told Xinhua by telephone.

Earlier, a local police source in the town put the toll at 30 killed and 60 others wounded, citing earlier police reports.

A suicide bomber driving an explosive-laden truck struck the headquarters of the Kurdistan Democratic Party in Makhmour town during a meeting in the building, according to a local police source.

Uthman said that six policemen were among the killed, including Brigadier Salim al-Jubouri, head of the police station in the nearby Nimrod town, and the mayor of Makhmour town was also wounded in the attack.

The blast badly damaged the headquarters building along with nearby local government and police station buildings and dozens of vehicles in the town, 100 km southeast of Mosul City, the Kurdish official said.

Police and rescue teams are still removing debris in a bid to look for more victims, Uthman added.

Sunday's attack was the second deadly attack of this month in the Kurdish region, where witnessed another suicide truck bombing in the city of Arbil, some 350 km north of Baghdad. A total of 20 people killed and 70 others wounded in the truck attack on the building of the Kurdish regional interior ministry in Arbil.