Lebanon's top intelligence official, Brig. Gen. Wissam al-Hassan, will be buried Sunday alongside the grave of his mentor, former Prime Minister Rafiq Hariri.

Al-Hassan, a critic of Syrian President Bashar al-Assad's rule, was killed in a Beirut car bombing Friday. Some blame the attack on the Syrian government.

His death spurred fears that Syria's civil war could boil over into neighboring Lebanon.

Al-Hassan's funeral procession will begin at 1 p.m. (6 a.m. ET) Sunday. He will be buried in Martyrs' Square in Beirut.