A gas line break on the campus of Haskell Indian Nations University caused a brief disruption Tuesday afternoon.

Emergency crews evacuated three buildings — Minoka Hall, Pocahontas Hall and Kiva Hall — to fix the leak, which was caused by construction workers. Classes in the immediate area were cancelled, but late afternoon and evening classes resumed as normal. The threat for those in the vicinity was minimal, according to a university official.

“There was never any danger to students,” said Stephen Prue, Haskell’s executive assistant to the president.

As of 3:30 p.m., students, faculty and staff were allowed back into the three buildings.