Police believe the suspects followed the victim as he left the store near Prospect Park Friday afternoon.
One of them opened fire, shooting the 60-year old man in the head.
He is in critical condition at Kings County Hospital.
Police say the gunman fled the scene in an unknown direction.
He is in critical condition.
Images of the suspects were captured on surveillance video.
Anyone with information is asked to call Crime Stoppers at 1-800-577-TIPS (8477).
The public can also submit their tips by logging onto the Crime Stoppers website at WWW.NYPDCRIMESTOPPERS.COM <http://WWW.NYPDCRIMESTOPPERS.COM> or by texting their tips to 274637 (CRIMES) then enter TIP577.
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