World Bulletin / News Desk

Five children were injured on Monday when a bomb tore through a street in the Turkish city of Diyarbakir, where deadly clashes have followed the collapse of a ceasefire by Kurdish militants.

In a separate attack, masked gunman on a motorcycle killed a police officer and wounded another in the city of Adana, which has a sizeable Kurdish population, security sources said.

The most intense fighting since the 1990s has engulfed the mainly Kurdish southeast after the state launched air strikes against the armed Kurdistan Workers Party (PKK) in Turkey and Iraq in July. More than 100 security personnel and hundreds of militants have been killed.

Gunmen opened fire on a vehicle carrying the mayor of Sanliurfa, according to the provincial governor's office.

Mayor Nihat Ciftciye, who belongs to Turkey's ruling AK Party, was unharmed, media reports said.