Israeli authorities said Thursday that arrests have been made over the July firebombing of a Palestinian home in the West Bank that killed a mother, father and 18-month-old boy.

"We have confirmed that a number of suspects have been arrested in connection with the incident that took place in Duma," Israeli police spokesman Micky Rosenfeld told AFP. 

A Shin Bet domestic security agency official said the arrests had been made in recent days over the arson, which drew international condemnation.