An undercover drug investigation in London has led to charges against a dozen people, three of whom live in Waterloo.

London Police say they began their investigation in January.

It culminated in a series of raids – six last Friday in London, one on the same day in Waterloo Region, and four more in London on Wednesday.

As a result, police say they have seized 1.4 kilograms of cocaine, 2.2 kilograms of crack cocaine and 1.7 kilograms of crystal meth, with a total estimated value of more than $500,000.

Also seized were a 12-gauge shotgun, seven vehicles and approximately $50,000 in cash.

A total of 31 criminal charges and 60 drug charges have been laid as a result of the investigation, which police dubbed ‘Project O-Boost’.

Those charged include nine London residents, as well as three people from Waterloo – 57-year-old Alvaro Brilhante, 39-year-old Joseph McLeod and 49-year-old Ruth Sheehan.

McLeod's attorney says that the charges against his client were later dismissed, and that he was never convicted of any offences.