A day after police charged a 60-year-old former convenience store owner with fraud and theft over a winning lottery ticket, the OPP are probing four more cases of potential insider fraud in the province's lottery system.

Hafiz Malik, pictured at right, was freed on bail Wednesday and concealed his face as he left court. Malik, 60, ran a store at Dufferin and Dupont Sts. and is accused of claiming a lottery ticket worth $5.7 million as his own.

The four Toronto co-workers who bought the ticket back in 2004 didn't learn that someone else had cashed it until this past July. It came three years late, but they were finally awarded the prize on Wednesday.

Last year, when three of the players found out that someone had cashed in their ticket they hired a private detective to look into whether the fourth had secretly claimed the prize.

Malik has been charged with two counts of fraud over $5,000 and one count of theft over $5,000. He could face up to 10 years in prison if he's convicted.

The Ontario Lottery and Gaming Corporation advises lottery players to always sign the back of their tickets and check their own numbers when possible. The OLG came under fire in a recent ombudsman's report for its perceived lack of attention to claims of fraudulent wins by lottery retailers.