Yemeni security forces have arrested a suspected killer of three pilots ranked group captains last May. The Interior Ministry said in a release Sunday that its security forces had caught one of the suspected killers of the Yemeni pilots. The 22-year-old arrestee is identified as Dhiaa Abdullah Al-Khalba, alias the \"rocket\", it said. Al-Khalba was arrested in a manhunt by security forces in Lahj Province in the south of Yemen, the minister added. Three military pilots were shot dead by unknown militants in Lahj on May 8 while they were going to work.