The scene of the crime in Lebanon. On Friday masked gunmen shot and killed a policeman in Tripoli. It's the second killing of a member of the security forces in two days. Security sources say the policeman was killed instantly when the gunmen opened fire on his car at around 5:30 in the morning. The shooting comes a day after Lebanon's new cabinet approved a security plan for Tripoli, where at least 29 people have been killed in the last two weeks.