Ottawa police are asking for help to identify the person or people who knocked down 32 tombstones in Notre Dame Cemetery in Ottawa's east end.

Sometime overnight between April 30 and May 1, 32 tombstones were vandalized at the facility at 455 Montreal Rd, near St. Laurent. Police said some of the stones suffered extensive damage.

The large grounds host a number of Canadian luminaries, including photographer Yousuf Karsh, former prime minister Wilfrid Laurier and former Chief Justice of Canada Henri E. Taschereau.

It's not known if those tombstones were desecrated, but media reports say one notable person's was: Joseph-Balsora Turgeon, Bytown's first francophone mayor. He served in 1853, two years before Bytown morphed into Ottawa.

Anyone with information should contact police at 613-236-1222 ext. 5166 or Crime Stoppers at 613-233-8477 (TIPS).