Chicago officers are going back on 12-hour shifts and will have their regular days off cancelled next weekend.

The order, revealed in a CPD memo obtained Thursday by ABC7, reverses an announcement made just 10 days ago by Supt. David Brown. At the time Brown said CPD was ending its use of extended, 12-hour shifts and cancelled days off.

"We're balancing officer wellness with this," Brown said at a June 1 news conference, "because last summer we went nearly 20 days with extended hours and cancelled days off. That is not sustainable."

Officers will return to the mandatory overtime and extended shifts for a weekend that includes Juneteenth observances, the annual Puerto Rican People's Day Parade and Father's Day.

The memo sent to CPD command staff ordering extended tours also instructs all officers to arrive for work next weekend with crowd control equipment in hand. "Helmet and respirator mask (gas mask), if issued, will be readily available" the deployment order states.