A bipartisan group of U.S. lawmakers on Friday urged the Trump administration to suspend future sales of munitions and crowd-control equipment to the Hong Kong police, who have been accused of using excessive force against anti-government protesters.

A Hong Kong democracy activist, Joshua Wong, this week tweeted pictures of teargas shells and rubber bullets he said were used by police against protesters.

U.S. Reps. Christopher Smith and James McGovern, who chair a congressional human rights commission, made their request in a letter to Secretary of State Mike Pompeo and Commerce Secretary Wilbur Ross.