A crazed son fatally stabbed his parents inside the Italian deli the couple owned on Long Island Thursday morning, according to sources and locals who frequented the shop.

The suspect allegedly knifed his mom and dad just after 9 a.m. inside the A & A Italian Deli on Hicksville Road near Boundary Avenue in Bethpage, cops and sources said.

He was taken into custody, the sources said. His name was not immediately made public.

A crazed son allegedly stabbed his parents inside their family owned deli on Long Island Thursday morning.

A customer who only identified himself as George said the slain couple “seemed like great people,” and that he’d often chat with them while waiting for his food.

The suspect was taken into custody, with bystanders saying the couple were ‘great people’ and ‘ver

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