A suicide attack by Islamic State (IS) militants on a gas factory near Baghdad has killed at least 11 people and wounded many more, Iraqi officials say.

Early on Sunday a car blew up at the entrance of the facility in Taji, about 20km (12 miles) north of the capital.

Six attackers wearing explosive vests then entered the plant and clashed with security forces, the officials say.

IS, which holds large parts of western and northern Iraq, have staged a number of attack in Baghdad recently.

In the worst violence in the city this year, car bombs killed 93 people in a market in a Shia Muslim area of Baghdad on Wednesday.