Philadelphia police and federal agents said they found a van containing low-grade explosives as the city tries to stem the widespread unrest, rioting, and looting that followed the fatal police shooting of 27-year-old Walter Wallace Jr.

Spokesman Rob Cucinotta of the Bureau of Alcohol, Tobacco, Firearms and Explosives told Fox29 the explosives and incendiary devices were found Wednesday night while the city was in the midst of an overnight curfew.

The city has seen a rash of ATM thefts this year in which people used low-grade explosives to vandalize or steal from the bank machines.

Fox29 also reports that 16 U-haul trucks were stolen Wednesday night from the same facility. Tanks of propane were also reportedly stolen from that facility.