Schoolchildren in the vicinity are being allowed to leave schools to go home, according to local broadcaster WCAU.
The road leading to the town of Paulsboro has been reopened but a limited evacuation is still in force.
The Coast Guard told WCAU that there is no immediate threat.
More top news
The Hollywood star reportedly looked like he "switched into superhero mode" as he chased the suspect near his home.
The former Olympic champion said she hit rock bottom after photos of her before her full transition were published in a magazine.
Zipporah Lisle-Mainwaring painted red and white stripes on the facade of the three-storey terraced building in Kensington in March 2015.