In a move that heightened tensions between the Government and the Judiciary, Pakistan’s Supreme Court has summoned Law Minister Babar Awan to explain why authorities had not implemented its verdict striking down a graft amnesty that benefited President Asif Ali Zardari. A Five-Judge Bench summoned Awan to appear before it on May 25 after Law Secretary Aqil Mirza, who recently resigned, sent a letter to the court saying he could not appear before it as he was unwell. The apex court had summoned Mirza and Attorney General Anwar-ul-Haq to appear before it yesterday to explain why the government had not contacted authorities in Switzerland to reopen graft cases against Zardari.