PITTSBURGH — Two people were arrested after climbing onto a Pittsburgh bridge in an attempt to hang a protest banner Sunday, authorities said.

The man and woman climbed the superstructure of the 6th Street/Roberto Clemente Bridge and clambered onto the main cable system between the deck and one of the towers about 8:30 a.m. Sunday, police said.

The bridge was then closed to traffic.

Fire department crews cut the line the protesters were using to try to hang the banner, which the group said was going to say “Black Trans Lives Matter” and call for shutting down the county jail and an Immigration and Customs Enforcement detention center in eastern Pennsylvania, KDKA reported.

The protesters were taken into custody after they descended shortly after 11:30 a.m. Sunday and the bridge reopened around noon.

The incident took place during a gay rights parade that was rerouted to another bridge.

Public safety officials said criminal charges were planned but didn’t specify what they would be.