HOPEWELL TOWNSHIP — A makeshift banner bearing an anti-Semitic message hung by persons unknown was discovered hanging from an Interstate 95 overpass Thursday morning, police said.

The 6 foot by 8 foot shower curtain was painted with the words “End Treason Arrest All Zionist Jews” in black capital letters, police said. The curtain, which had been stapled to a board, also bore “9 11” in red letters.

The sign was hanging from a railroad overpass that crosses the highway just before the Reed Road vehicular overpass. It was attached to a steel support beam, and faced away from southbound traffic over that side of the road, police said.

Township police received a call around 11:45 a.m. from a driver reporting the sign between Exit 3 at Scotch Road and Exit 4 for Pennington Road.

Officers and a state trooper went out to the scene, and the sign was taken down with help from the Prospect Heights Fire Company.

Police say they are not sure how long the board and banner had been up, and that most of the writing was not visible from the roadway because the wind flipped a portion of the shower curtain onto the beam. The sign was not easy to read, police said, and they received no other calls about it.

Whoever positioned the banner did so from property owned by railroad company CSX, and so CSX police are investigating along with a Hopewell detective and members of the state Division of Criminal Justice.

Contact Alex Zdan at azdan@njtimes.com or (609) 989-5705.