Manama: A Saudi scholar has offered a $450,000 reward for killing Syrian President Bashar Al Assad.

"We announce a reward of $450,000 for whoever kills the assassin Bashar Al Assad, whose massacres of women and children have horrified the world," Ali Al Rabieei said on his Twitter account.

The reward was announced after videos on Saturday showed rows of dead Syrian children lying in a mosque with gaping wounds.

Reports said that the shelling attack on Al Houla, northwest of Homs, killed 108 people, including at least 32 children under the age of 10, and injured 300.

Damascus has strongly rejected the allegations that its forces were involved in the shelling and blamed "hundreds of heavily armed gunmen” who fired mortars, heavy machine guns and anti-tank missiles.