An arsonist allegedly tried to set fire to a deli that has yet to even open, police said.

They said someone intentionally set fire to 5993 Broadway, where a new store, Gourmet Deli and Bagels, is currently under construction.

Cops say the storefront, which used to house Sandwich King 2, and Stiff Weasel the year prior, caught fire at about 8:45 p.m. on Sept. 11.

They said whoever started the fire did while people were inside but that no one was injured.

The owner of the neighboring bodega, who did not give his name, said he felt a small explosion.

“Everything feel of the wall here and now we have no water or electricity on this side,” he said on Sept. 12.

Officers from the 50th Precinct said they are treating the incident as a case of arson, but have turfed the investigation over to the FDNY.