The commission that looked into corruption in Quebec's construction industry will release its long-awaited report Tuesday morning.

Superior Court Justice France Charbonneau, who led the inquiry, will deliver a speech at 11 a.m. just as the report is released online.

Charbonneau heard testimony over a span of 30 months beginning in the summer of 2012.

Most of the witnesses discussed their knowledge of the province's construction industry and its ties to organized crime and political parties.

The commission was created in late 2011 and heard from its final witness in November 2014.

Charbonneau's original deadline to produce a report was October 2013 but the former Parti Quebecois government extended it by 18 months in early in 2013 until April 2015. Earlier this year, the current Liberal government extended the deadline until the end of this month.