LONDON, Ont. - Police in London, Ont., say they have charged a tenth teenager after a two-month investigation into a high-school graduation party that allegedly left a home with $80,000 in damage.

They say they've charged seven 18-year-olds and three younger teens in relation to what happened at a house rented through an online short-term rental service.

Police say they received multiple 911 calls on June 27 and officers found dozens of young people inside the home.

They say home was damaged significantly.

Police say the homeowners believed they were renting to a young couple from out of town and had no idea about the party.

All 10 each face one count of mischief exceeding $5,000.