Four people were killed and two others injured after a shell landed on a car in Shabwa governorate in southeastern Yemen . An official security source in Shabwa governorate said on Thursday evening that the missile has fallen on a car in an intersection in the center of the governorate , killing four people and wounding two others . The source said security forces started investigation into the incident to uncover its circumstances. Shabwa governorate has seen over the past days violent clashes between army troops and gunmen from al-Qaeda in which dozens were killed or wounded. Yemeni army forces managed to take control of the most prominent militants’ strongholds.