HOUSTON -- A federal judge is expressing frustration that Texas officials don't seem to be honoring a settlement of a lawsuit over oppressive heat at some state prison facilities.

During a court hearing Friday in Houston, U.S. District Judge Keith Ellison debated whether officials should be sanctioned by having them experience the same temperatures as inmates.

READ MORE | Advocates Call for Cool Down in Texas State Prisons

Ellison delayed a ruling on possible sanctions until he's heard from officials, including prison wardens, at a hearing on Tuesday. Last year's settlement resolved a lawsuit filed in 2014 over temperatures at the Wallace Pack Unit, about 95 miles northwest of Houston.

Attorneys for the inmates say prison officials are not adhering to the settlement.

A lawyer with the Texas Attorney General's Office told Ellison officials are working to fix problems affecting the prisoners.