A Quebec politician has posted bail to secure the release of well-known activist Jaggi Singh from a Toronto jail.

Québec Solidaire MNA Amir Khadir said he felt a civic duty to help activist Jaggi Singh. (CBC)Québec solidaire MNA Amir Khadir and another unnamed person have split Singh's $10,000 bail.

Singh turned himself in to Ontario authorities following the weekend of the G20 riots in Toronto, to face three conspiracy-related charges.

Khadir says he fronted the money because he believes Singh's arrest was a violation of his right to protest.

"In that regard, and in the absence of any support [for Singh], or questioning from the Quebec government, which has done nothing to protest the massive arrests ... somebody had to do it."

Khadir travelled to Toronto on Monday to pay the bail. He is also one of three people who provided a $75,000 guarantee that Singh will respect his bail conditions.

Jaggi Singh turned himself in to authorities after the G20 summit in Toronto in June. (Timothy Neesam/CBC)Singh was released on the conditions that he:

• Stay with one of the three people acting as his guarantors.
• Turn in his passport.
• Not use a cellphone.
• Not have any contact with other protesters.

Québec solidaire is supporting requests for a public inquiry into the mass G20 summit arrests last month.

Several people allege they were mistreated by police.

Singh is a seasoned activist who has had several run-ins with the law.

In 2001, he was arrested during the Summit of the Americas in Quebec City on weapon charges related to a mock catapult that launched teddy bears.