Law enforcement sources tell the Associated Press the weapon used by the 21 year-old suspect in the supermarket massacre in Boulder, Co. was a semi-automatic AR-15 rifle.

Ten people, including Boulder Police Officer Eric Talley, were killed in Monday’s shooting, the second mass shooting in the U.S. in a week. The tragedy happened just 10 days after the city of Boulder’s ban on assault weapons like the AR-15, meant to deter incidents like this, was blocked in court.

That courtroom defeat came about because the NRA sued the city on the grounds that its 2018 ban on rifles and magazines with 10+ bullets went against state law. After the courts ruled against the ban, here’s what the gun-lobby group wrote on twitter.

What did they tweet Monday night, after the same rifle the group defended in court was reportedly used to kill 10 innocent people? More of the same about verbiage about the 2nd Amendment. Shannon Watts, one of the nation’s leading gun-reform advocates, tweeted that each time there’s a mass shooting, the NRA makes clear where its priorities lie.