The airstrike, on Oct. 8, 2016, by the U.S.-backed, Saudi-led coalition at a funeral service in Yemen killed scores of civilians, garnering international outrage.
HRW called the attack an "apparent war crime" today and urged for an international investigation into the incident.
“After unlawfully attacking schools, markets, hospitals, weddings, and homes over the last 19 months, the Saudi-led coalition has now added a funeral to its ever-increasing list of abuses,” Sarah Leah Whitson, Middle East and North Africa director for HRW, said in a statement today.
HRW identified the munition used as a U.S.-manufactured 500-pound laser-guided bomb after reviewing photos and video footage from the scene of the funeral service following the attack.
HRW called on the U.S. and other governments today to "immediately suspend arms sales to Saudi Arabia until it curbs unlawful attacks and credibly investigates those that have already occurred."
"In light of this and other recent incidents, we have initiated an immediate review of our already significantly reduced support to the Saudi-led Coalition and are prepared to adjust our support so as to better align with U.S. principles, values and interests, including achieving an immediate and durable end to Yemen's tragic conflict," Price said in a statement earlier this week.
Just last month, U.S. lawmakers cleared the way for a new massive arms deal between the U.S. and Saudi Arabia to proceed, after voting against a resolution that would have blocked the sale of $1.15 billion worth of land military equipment from the U.S. to Saudi Arabia.
Advocacy groups have called on the U.S. for months to stop supplying weapons and assistance to Saudi Arabia because of the Saudi-led coalition's indiscriminate use of these arms on civilians in Yemen.
U.N. High Commissioner for Human Rights Zeid Ra’ad Al Hussein said in a statement earlier this week that, "the international community has a legal and moral duty to react robustly to the increasingly horrific levels of civilian casualties in Yemen."
"Since the beginning of this conflict in Yemen, weddings, marketplaces, hospitals, schools -- and now mourners at a funeral -- have been hit, resulting in massive civilian casualties and zero accountability for those responsible,” Zeid added.