Palestinian police officers on patrol in the West Bank city of Tulkarm said they killed a Palestinian gunman in the early hours of Thursday. The police said the officers came under fire amid “lawlessness in the city.” The militants opened fire at a police station, prompting officers to return fire. In many Palestinian cities in the occupied West Bank, the Palestinian Authority is responsible for security. Although security co-operation between Israel and the authority has been officially broken off several times, it continues behind the scenes. The militant who died was said to be member of th…