A Catholic church and school in Mississauga defaced by graffiti last week has been hit by vandals once again.

Black spray paint was discovered on an outside wall of St. Catherine of Siena Catholic Elementary School Monday morning at 8 a.m.

Peel Regional Police Const. George Tudos told CP24.com the latest graffiti consisted of a mix of non-threatening diagrams and words.

But last week was a different story. One wall of the school had an anti-Semitic message scrawled on it. Black spray paint was also splattered on the church and an adjacent religious statue.

Police are looking for witnesses. Anyone with information that could identify those responsible is asked to call Peel Regional Police at 905-453-2121, ext. 1233.