A former well-heeled developer from the Hamptons torched another land dealer’s spectacular mansion on Long Island, cops said Sunday.
Pals said troubled businessman David Osiecki — who owns a $2 million nearby home and founded a private pingpong club in Water Mill — had been in a downward spiral before allegedly setting fire Saturday to the empty, $34 million Bridgehampton home owned by fellow developer Ziel Feldman.
“He sort of deteriorated over the last few years,” a friend said of Osiecki, who was charged with felony arson.
“We all felt terrible. We tried to get him some help,’’ but a “combination” of emotional and drug issues overtook him, the pal said.
A cuffed Osiecki, 54, told a reporter outside a Long Island courthouse, “It’s Easter Sunday, and I’m taking a day of meditation.
“I was trying to save my best friend Ziel,” Osiecki added cryptically. “I was trying to get his art to Norway.”
Osiecki also was charged with arson for allegedly setting a brush fire in Bridgehampton on Friday. In the past two years, he’s been busted for larceny, harassment and DWI, too, and an adult daughter previously had an order of protection out against him, law-enforcement sources said.
Feldman declined to comment Sunday.
“At first, I thought I just had an eccentric. But he’s a real kook,” said former associate Tom Gouldsbury, who claims Osiecki owes him money from a failed business venture.”
The beachfront home that the suspect allegedly set ablaze was put on the market in 2011, but it never sold.