Six teens tried to rob an elderly man in Central Park at gunpoint Saturday night, police sources said.

The thugs approached the 77-year-old man near 102nd Street and West Drive around 9 p.m. One of the thugs pulled his weapon and demanded that the elderly man empty his pockets, according to the sources.

But the heist was foiled when a Central Park conservatory vehicle pulled up, and the boys fled empty-handed.

The six boys remain at-large Monday morning, cops said. No injuries were reported.