Several Texas state House Democrats ripped up the written agreements that allowed them to leave the chamber with a police escort and returned to the House floor Tuesday night, the caucus announced.

A handful of Texas House Democrats were locked in the state Capitol overnight as a protest against a House rule that required members who fled the state earlier this month to be followed by a police chaperone.

The imposition of police surveillance by Republican state House leaders on their Democratic colleagues marked the latest front in Texas’ redistricting battle.