The women have not been injured, but information on the hostage situation is not clear when the three are barricaded in a room at the facility, said Gloucester County lawyer Charles Fiore. The women are UPS employees, he said.
Although shots were fired, there are no reports of injuries, Fiore said.
Thirty-two UPS employees have been evacuated to a Holiday Inn, about 10 minutes away, said Spokesman Debra Sellitto in Gloucester County.
Police have limited travel on two roads near the facility, she told CNN. The event is limited to the UPS building, Sellitto said.
The county received words from an active shooter situation around 8:30 AM ET, she said.
The building, located in an industrial area of the Southern New Jersey township of 6,000, is a bulk mail processing facility, UPS said.
"We work with law enforcement when responding and cannot provide information on the identity of the people involved at this time," the company said on Twitter.
In a tweet just before 1
Township school districts are under modified lockdown, and no one can enter or leave any of the schools after police reported the district "police activity in a nearby industrial park", says superintendent Patricia Haney.
The nearby Swedesboro -Woolwich School District said it was monitoring the situation. The students are safe, the district said in a note to parents.
Development history – more to come.
CNN's Chris Isidore, Julia Jones, Evan Simko-Bednarski, Kristina Sgueglia and Aaron Cooper contributed to this report.