The Crow and Northern Cheyenne tribes both extended their stay-at-home orders on their south-central Montana reservations.
The Northern Cheyenne order has been extended to May 8, while the Crow order will continue for another two weeks until May 14.
The Crow order was set to expire Thursday night. The Northern Cheyenne order was extended last Friday.
Montana Gov. Steve Bullock lifted his stay-at-home order for the state last week to begin a phased reopening of businesses, schools and other groups.
Bullock said at that time that COVID-19 cases in Montana were flattening, allowing him to loosen restrictions meant to curb the spread of the disease.
In making that announcement, he said that tribes could choose to do the same or extend their own orders.
The Crow order closes all nonessential businesses, prohibits all public and private gatherings outside of residences and orders visitors to the reservation to self-quarantine for 14 days.
The Crow tribe has reported two cases of COVID-19 of tribal members.
When Tribal President Alvin "A.J." Not Afraid issued the order March 28, roadside check points were put in place at the reservation border.
Northern Cheyenne President Rynalea Pena imposed an 8 p.m. curfew as part of her order. She also issued a ban on open burning and fireworks.
The Northern Cheyenne tribe has no reported cases of COVID-19.
Here's the Crow tribal order:
Here's the Northern Cheyenne order: