The National Hockey League has decided to close all-cross-border games through the start of the holiday season, and the Columbus Blue Jackets and Montreal Canadiens have been the latest NHL teams to be shut down.

“Although there has been a recent increase in positive COVID test results among players, coaches, and hockey staff, there have been a low number of positive cases that have resulted in concerning symptoms or serious illness,” the NHL said in a statement Sunday. “The NHL and NHLPA, along with their medical experts, will be monitoring not only the number and pattern of positive COVID results but also the depth of club lineups so as to ensure both the health and safety of the players and the integrity of League competition.”

The Anaheim Ducks, Los Angeles Kings, and Edmonton Oilers’ games have also been postponed following this announcement.

Previously, the Detroit Red Wings and Toronto Maple Leafs became the sixth and seventh NHL teams to stop play through the holiday break, alongside the Boston Bruins, Nashville Predators, Calgary Flames, Colorado Avalanche, and Florida Panthers.

The NHL and NHLPA are continuing to discuss whether players should participate in the 2022 Beijing Olympics and an announcement is expected in the coming days.

The NHL will shut down from December 24-26 for Christmas.