A 20-year-old London man is charged with hosting and participating in indoor gatherings that exceeded permitted numbers.

N.S. RCMP were not able to confirm how many people attended the Greenfield gathering on Thursday night, but said it was over the gathering limit of 10.

It's the third time London police have announced charges under the Reopening Ontario Act in relation to gatherings exceeding size limits in less than a week.

Fines are determined in court, but under the Reopening Ontario Act legislation, those charged with hosting an illegal gathering could face a minimum fine of $10,000 each.

Four people are charged with hosting an indoor gathering which exceeded the number permitted. The charge under the Reopening Ontario Act could potentially result in a $10,000 fine.

Police were called to several noise complaints over the weekend but say only the Mill Street party and a separate gathering appear to have violated the Reopening Ontario Act.

Two men are facing charges in connection with a massive Halloween party that drew a crowd of over 100 people.

'You don't have to be a public health physician to know what a terrible idea this is,' said Dr. Chris Mackie.