Officials familiar with deliberations of a committee that sets industry standards say the proposal would end production of drop-side cribs — where one side moves up and down. The proposal would require cribs to have four immovable sides.

The officials spoke on condition of anonymity because the proposal has not been finalized.

The Consumer Product Safety Commission says at least three children have died in drop-side cribs in the last 18 months. The agency knows of more than two dozen incidents in which drop-sides detached from cribs.

The proposal to ban the cribs was first reported by the Chicago Tribune.