Police are warning people in the Lower Mainland of British Columbia to expect to see a “huge” number of bikers and police officers around the region this weekend as Hells Angels gather from across the country to mark the gang’s 40th anniversary in B.C.

A statement from the B.C. Combined Forces Special Enforcement Unit (CFSEU) on Friday said gang members, their families and their friends are expected to descend on their White Rock Chapter clubhouse in Langley, B.C., and other communities in Metro Vancouver and the Fraser Valley on Friday, Saturday and Sunday.