Two smoke grenades were thrown Tuesday morning into the home of a Palestinian family in a small town in the West Bank in a possible hate crime attack. The 9-month-old baby and his parents, who were in the structure at the time, were unharmed.

The incident took place in in the Ramallah-area town of Beitillu, and according to the police, the words "revenge" and "hello from the detainees of Zion" were scrawled on the side of the home – a possible reference to Jewish extremists being held by the Shin Bet in relation to an attack on a Palestinian family's home in Duma that killed a baby and his parents earlier this year.

Open gallery view Broken window at home of Palestinian family hit with smoke grenade attack in Beitillu, West Bank. December 22, 2015. Credit: B'tzelem

Police officers and Civil Administration officials are on the scene and an investigation has been opened.

In recent weeks, anger has been growing among far right activists who object to the arrest and interrogation of the suspected Jewish assailants behind the arson-murder of the Dawabsheh family in the village of Duma in July. Roughly a thousand people demonstrated Saturday outside the home of Shin Bet chief Yoram Cohen in Jerusalem in response to claims by the suspects that they were being tortured.