PPP Senator from Balochistan, Lashkari Raisani Tuesday resigned from upper house membership. The Senator submitted his resignation to Senate Secretariat, sources said, adding he called on chairman Senate Nayyar Bukhari before taking this step. Sources said Raisani resigned over law and order situation of the province where dozens of people have been killed in recent days. Source also said he was annoyed with his party leadership for not being paid due attention.