The latest developments came just hours after a backpack containing multiple bombs was found Sunday night near an Elizabeth, New Jersey, train station, according to the FBI and the city’s mayor.

The backpack had up to five devices, Elizabeth Mayor Chris Bollwage said. It was found around 9:30 p.m. in a wastebasket outside a neighborhood pub, about 500 feet from a train trestle. The two men who found the backpack thought it might contain something valuable, but they alerted police when they saw wires and a pipe on the devices, the mayor said. No cell phones or electronic timing devices were found, Bollwage said.