Mirlande Wilson, a Haitian immigrant, said she purchased a Mega Millions ticket, worth $105 million, with her own money separately from her co-workers' pool at a McDonald's in Milford Mill, Maryland.
Her co-workers claim they each contributed $5, before sending her out to buy tickets for the group a few hours before Friday's nationwide Mega Millions draw.
CCTV footage, from a nearby 7-Eleven grocery store at 7:15 p.m., shows that the winning ticket was purchased around the time Wilson went to the shop.
In a phone call to the restaurant, shortly after the numbers were announced at 11 p.m., Wilson is said to have shouted: "I won, I won."
Wilson's co-workers, who make around $7 an hour, noticed that she did not say "we won," and were immediately suspicious.
Wilson told the New York Post that she had the winning ticket in a safe place and would not be sharing her prize money with her former friends at McDonald's: "I was in the group, but this was separate. The winning ticket was a separate ticket."
The mom of seven later started to backtrack after being visited at her home by angry co-workers: "I don’t know if I won. Some of the numbers were familiar. I recognized some of them. I don’t know why people are saying differently. I’m going to go to the lottery office today. I bought some tickets separately."