Explosions shocked Mansoura district of Aden province atdawn on Sunday and targeted a police station and the Political Securityheadquarters, a security source said.The security source told Saba that the explosions caused by explosive devices didnot result in any casualties except little damage in the vicinity of the walls of thetargeted security facilities.An initial investigation by a security team specialized in dealing with explosivesconfirmed that those explosive devices are homemade and from the same kind usedby the organized terrorism elements, the security source added.The source indicated that those explosive devices were detonated by programmed-timing batteries.