Subway manager Christine Ippolito says the man drove away in a truck, but two nights later he was back in a different car.
"He waited in the parking lot from 6:30 until 8 when he came into the store," adds Ippolito.
Police believe the same masked man may be responsible for a string of 16 commercial robberies throughout Suffolk County over the past month.
The most recent incident happened Tuesday night at a KFC in Shirley. A man with a similar description has targeted at least six Subway restaurants and a host of gas stations since early December. Most of the incidents have occurred up and down Route 112, but there have also been reports of the guy all over from Lake Ronkonkoma to Shirley to Islip Terrace.
"He hasn't been violent yet, but there is always the potential," said Deputy Inspector Matthew Lewis of the Suffolk County Police Department.
Christine Ippolito says the entire thing has her terrified. Ippolito says the female employee who encountered the man quit shortly afterwards, and then two other employees followed suit.
"We close earlier on the weekends, because we are the only ones here. We lock the door at 6 p.m., only letting customers in if they knock, and we see who they are," says Ippolito.
Suffolk County Police do not know if they are dealing with the same man in every incident, but there are a lot of similarities. They are also urging the public to give them a call if they have any information.