Vandals as young as four-years-old are believed to have repeatedly damaged a Catholic Church's stained-glass windows in the Wheatbelt town of Corrigin, and police are powerless to act.

WA Police confirmed a gang of 10 - all aged between four and eight - had been seen in the church grounds last weekend and were also responsible for the vandalism of a nearby public park.

St Theresa’s Church in Corrigin has been attacked by a group of vandals as young as four. Credit:Gordon Stuart

But under WA law, children under the age of 10 are not deemed criminally responsible for their actions and cannot be charged.

"Corrigin Police were made aware of damage to some windows at the St Therese Catholic Church over the weekend… Police examined the scene and it appeared the windows had been broken by small rocks that had been thrown at the church," Sgt. Troy Coumbe said.