Bulgarian President Rosen Plevneliev said Wednesday in the aftermath of a terror attack that killed seven Israelis in the city of Burgas earlier in the day that Bulgarian authorities met with members of the Mossad a month ago, but received no warning of an expected attack, the Sofia News Agency reported.Plevniev stated that Bulgarian authorities would have acted seriously if they had received advanced warning of a terror attack."The attack does not mean that Bulgaria is a risky destination for tourism," the Sofia News Agency quoted Plevniev as saying. He added that Bulgarian authorities were doing all in their power to help the victims of the attack.