The Toronto police constable called the “genesis” of a months-long corruption probe has been denied bail.

Const. Timothy Barnhardt, 56, was denied bail in a Toronto court on Friday afternoon, although defence asked that he receive protective custody, which was granted. He is scheduled to appear in court next on March 19.

Barnhardt is among seven police officers who were arrested this week, along with one retired officer, as part of a months-long corruption probe by York Regional Police that has resulted – so far – in numerous charges, including conspiracy to commit murder to drug trafficking. 

Nineteen civilians were also arrested. On Friday, Peel Regional Police also said it had suspended three officers, though no charges have been laid against them at this point.

WATCH | What we know so far about the 7 police officers arrested:

What we know about the Toronto officers charged in the corruption probe

Seven active Toronto police officers and one retired officer have been arrested in connection to a major corruption probe by police in York Region. CBC’s Greg Ross breaks down what we know about the accused.

Barnhardt is facing the longest list of offences.

This week, York police Deputy Chief Ryan Hogan called Barnhardt the “genesis” of the investigation. Police allege Barnhardt released confidential information to criminals, which helped facilitate targeted shootings. 

He’s also accused of supporting illegal cannabis dispensaries by accepting bribes in exchange for protecting against police investigation, and accused of being involved in cocaine trafficking. 

Barnhardt, of Mississauga, faces 17 charges, including conspiracy to obstruct justice, conspiracy to commit public mischief, and numerous drug trafficking charges.

CBC News reached out to his lawyer Thursday, but has not yet heard back.