Syria's state-run television says Prime Minister Wael al-Halki has escaped what it called a "terrorist" attack in the capital, Damascus.
The report says Halki's convoy was targeted by a bomb in the western neighborhood of Mazzeh, close to a school, on April 29.
The British-based Syrian Observatory for Human Rights said six people were killed in the blast, including one of Halki's bodyguards.
UN Secretary-General Ban Ki-moon condemned the bombing as a "terrorist attack."
Damascus has been hit by a series of blasts in recent months that have caused hundreds of deaths and injuries.
The Syrian government says Muslim extremists trying to overthrow President Bashar al-Assad are to blame for the attacks.
Syria's conflict started with peaceful protests against Assad's regime in March 2011 but eventually turned into a civil war.
More than 70,000 people have been killed so far.
Based on reporting by AP, AFP, Reuters, and the BBC