Lambton OPP officers are investigating after a sign was vandalized at the Ipperwash Beach parking lot.
Police say a sign reading "River Aux Sable Territorial Lands, More to Come" was defaced with offensive graffiti in black marker.
Police say the sign was vandalized sometime between 12pm Saturday and 9:30am Sunday.
Police remind everyone that writing graffiti carries a charge of mischief. Mischief can carry a jail sentence upon conviction.
Anyone with information is asked to call Lambton OPP or Crime Stoppers.
