(Courtesy of Human Rights Watch's Facebook)

"The United States and the European Union should tell President Hosni Mubarak and Egypt's military commanders that the army's actions on February 2 [in Tahrir Square] raised serious doubts about its willingness to protect pro-democracy protestors from violent attacks, and that their failure to uphold fundamental human rights, including prohibitions on extrajudicial killings, torture and enforced disappearances, will prompt an immediate suspension of all military assistance," the organization said in a statement early Thursday morning.

Egypt receives around $1.5 billion in U.S. military aid each year and is a "critical US ally in an often volatile Middle East region," reports the AFP.

The Obama administration was initially hesitant to denounce Mubarak because of the vital role he has played in fostering U.S. relations in the Middle East.

But as civil turmoil and public unrest has grown overseas, so has the pressure to step in.

President Obama asked Mubarak not to seek re-election through an ambassador on Tuesday.

Later that day, Mubarak announced he would not run for re-election and would end his 30-year reign in September. 

But Obama rejected this timetable in a speech Tuesday night at the White House.

"Change must take place," he said. "My belief is that an orderly transition must be meaningful, it must be peaceful, and it must begin now."

In the statement, HRW's Executive Director Kenneth Roth said, "The events in Tahrir Square and elsewhere strongly suggest government involvement in violence against peaceful protesters. The US and other allies should make clear that further abuse will come at a very high price."

Press Secretary Robert Gibbs condemned the violence in Cairo in a press briefing Wednesday afternoon.

"Obviously if any of the violence is instigated by the government, it should stop immediately," he said.

HRW also spoke to the legal ramifications of government-organized attacks.

"The use of force by state security forces is governed by international standards, and subject to international legal obligations that are binding on Egypt," the statement said. "Egypt is a party to the International Covenant on Civil and Political Rights, which prohibits arbitrary killings including those resulting from unlawful or excessive use of force. This prohibition imposes an obligation on states to investigate, and where appropriate prosecute, any such alleged killings. The UN Basic Principles on the Use of Force and Firearms applies to all those who exercise police powers, including soldiers when they are acting in this capacity.  The Basic Principles state that lethal force may only be used 'when strictly unavoidable in order to protect life.' When doing so, the security forces must act with restraint and in proportion to the seriousness of the offense and the legitimate objective to be achieved; minimize injury; and respect and preserve human life."