Interior Minister Hamid Nawaz Khan on Wednesday said a tribal militant commander and mastermind of two suicide attacks on former interior minister Aftab Ahmad Khan Sherpao and killer of a serving Intelligence Bureau (IB) official was killed in an encounter with security agencies on Tuesday.“Abdul Siar, head of Siar group in the Tribal Areas, was killed on Tuesday in an encounter between security agencies and his men between Charsada and Mohmand Agency,” Hamid told reporters after attending a National Public Safety Commission meeting. Nawaz said almost 116 innocent people had died in various terrorist attacks by Siar and his men in various parts of the country. He said security agencies had also arrested two of Siar’s men during the encounter, who divulged important information after which the government had increased security of prominent politicians and important public buildings across Pakistan.