Ottawa CNN — Six people have been arrested in last year’s multimillion-dollar gold heist at Toronto’s Pearson International Airport, police in Canada and the US said Wednesday.

Police have also issued arrest warrants for three others in what they described as an “inside job.” All nine suspects have been charged with over 19 counts.

On April 17, 2023, an air cargo container carrying more than 22 million Canadian dollars’ worth of gold bars and foreign currency was stolen from a secure storage facility using fake paperwork, police say. The gold and currency had just arrived on an Air Canada flight from Zurich, Switzerland.

At least two former Air Canada employees allegedly helped in the audacious theft, police say. One is now in custody and an arrest warrant has been issued for the other.

“They needed people inside Air Canada to facilitate this theft,” Detective Sgt. Mike Mavity of Peel Regional Police said, adding that in his opinion, this was an “inside job.”

“We thank the police for their diligent efforts in investigating this matter. As this is now before the courts, we are limited in our ability to comment further. However, we can confirm, as stated by police, that two of the individuals identified did work for Air Canada in the cargo division at the time of the incident. One left the company prior to the arrests announced today and the second has been suspended,” Peter Fitzpatrick, a spokesperson for Air Canada, said in a statement.