Pakistan on Friday lodged a protest over the bail granted to the alleged mastermind of the Samjhauta Express blast by an Indian court, the media reported.Authorities in Islamabad summoned the Indian High Commissioner, expressed their reservations and conveyed that New Delhi has not taken action against the mastermind and other culprits of the attack, Geo News reported.An Indian court has granted bail to Swami Aseemanand, arrested for masterminding the attack on the Samjhauta Express, a train headed to Pakistan, which killed 68 people.