An Independent MP from Nova Scotia says Canadians should reconsider going to Mexico as long as a Canadian woman who's been sitting in a prison for the past two years is still in custody.

Bill Casey tells the Halifax Chronicle Herald that it appears Brenda Martin is a victim who's been treated inappropriately, especially since she hasn't been convicted of anything.

Martin has been in a women's prison outside Guadalajara for the past two years charged with money laundering - an accusation she denies.

Casey, a former Conservative who represents the riding of Cumberland-Colchester-Musquodoboit Valley, has written a letter to Mexico's ambassador to Canada calling for Martin's release.

Casey says the case raises questions about whether Canadians are safe in Mexico, and he says Canadian tourists can make a difference by spending their vacation money elsewhere.

Martin, 51, was detained in February 2006 in connection with an investment scam involving her former boss, Alyn Waage - who has also denied Martin was involved.