OTTAWA - Celina Caesar-Chavannes has informed Prime Minister Justin Trudeau that she's leaving the federal Liberal caucus and will sit as an independent MP.

The Whitby, Ont., MP has been a vocal supporter of Jody Wilson-Raybould and Jane Philpott -- two cabinet ministers who resigned over the SNC-Lavalin affair.

She also accused Trudeau earlier this month of reacting with anger and hostility when she informed him that she would not be seeking re-election this fall.

Caesar-Chavannes, first elected in 2015, has been a relatively high-profile backbencher, primarily as an advocate for the rights of black Canadians.

She also made news in 2016 when she openly talked about her battle with depression.

At the time, Caesar-Chavannes, who was initially named parliamentary secretary to the prime minister, praised Trudeau's understanding of mental illness but she has since soured on his leadership.