DOVER, Del.- Police are investigating after several headstones and memorials were damaged at a Dover cemetery.

At least four headstones and memorials in the oldest section of Lakeside Cemetery were vandalized sometime between 6 p.m. Wednesday and 8:15 a.m. Thursday, according to the Dover Police Department.

It is not known how the suspect(s) damaged the the headstones or memorials, police said.

Anyone with information is asked to contact the Dover Police Department at 302-736-7130. Tips can also be submitted through Delaware Crime Stoppers online or by calling 1-800-TIP-3333. A cash reward of up to $1,000 is possible for information leading to an arrest.