The 1977 Moscow bombings were a series of three bombings in Moscow committed on January 8, 1977. These terrorist attacks claimed seven lives, while 37 people were seriously injured. No one ever claimed responsibility for the bombing, though three members of an Armenian nationalist organization were ultimately executed for it after a secret trial following a KGB investigation. Some Soviet dissidents claimed that the suspects had an alibi, and Andrei Sakharov believed the bombings might have been arranged by the KGB itself. According to historian Jay Bergman, "who actually caused the explosion has never been determined conclusively".