1:07ABC NewsMarch 26, 2021Still no motive in Boulder shooting, police chief saysA motive has not been determined in the mass shooting that killed 10 people at a Boulder, Colorado, grocery store.Up Next in news5 deadliest mass shootings in recent US historyMarch 26, 2021Biden calls for stricter gun control legislationMarch 24, 2021King Soopers announces $1 million donation to the Colorado Healing FundMarch 26, 2021