/*Suffolk County*/ police say the suspects used a knife to threaten the man outside a home in /*Stony Brook*/ just after 9 p.m. Sunday.
Then they stole cash and three pizzas.
Police arrested 19-year-old Raymond Tomasicchio, 17-year-old Abhishek Sathiakumar and 18-year-old Thomas Hynes.
Tomasicchio and Sathiakumar were arrested on April 23 and arraigned at First District Court in /*Central Islip*/. Hynes was arrested Tuesday evening and is scheduled to be arraigned at First District Court in Central Islip on April 25.
The victim, who works at the Domino's Pizza on North County Road, was not injured.
All three suspects are charged with first-degree robbery.
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