Grinnell said he went to a second store, where he withdrew some money and bought some scratch-off tickets.
"I took out $40, bought some tickets and won $27," Grinnell said.
Grinnell said he decided to test his luck and went back to the Fastrac to buy more tickets from a Lottery vending machine. He said he scratched off the new tickets, which included a $3,000,000 Money Clip ticket, in his car.
The ticket turned out to be a $3 million top prize winner.
"I was in disbelief. I checked the ticket about 100 times. I immediately signed it and put it away," Grinnell said.
The winner collected a $1,558,576 lump sum payment after tax withholdings.
Grinnell said he is planning to buy a house and take care of his son with his newfound fortune.