NEW YORK: Eight sticks of military-grade explosives were found Monday at the New York City Marble Cemetery in the East Village of Manhattan, the police commissioner said.The explosives were dug up in May or June 2009 by a groundskeeper and laid aside, Police Commissioner Ray Kelly told reporters. A volunteer cleaning inside the cemetery found the bag on Sunday. Monday, he called police, Kelly said.The explosives were not set up or wired to detonate.Each stick is about one and a quarter pounds, said Kelly, who identified the powerful explosive as C-4. "Inside a building, obviously it could have caused an awful lot of damage," he said.Kelly added the material would be taken to a police firing range by members of a bomb squad.