Two smoke bombs were lobbed through the window of a family home in the Palestinian Authority (PA) village of Bitilu early Tuesday morning, in the Ramallah area. 

A young couple and their nine-month-old infant were in the home at the time, but escaped the attack uninjured. 

Security forces and Civil Administration officials also found graffiti at the scene reading "Revenge - regards from the arrested of Zion."

The tag likely refers to the controversial arrests in the Duma arson case, which have made headlines over allegations of overly-harsh interrogation methods being used against detainees.