In fresh clashes between pro-and-anti-Morsi protesters in Egypt Tuesday, at least 12 people were killed and dozens others injured.
Tuesday's deadly clash took place in the vicinity of Cairo University, according to the Egyptian Health Ministry.
More than 100 people have been killed in a series of clashes and violence since Mohamed Morsi was deposed and replaced by interim president Adli Mansour. Morsi was ousted by Egypt's military following massive protests demanding his resignation.
Rejecting the interim government, Mohamed Morsi's supporters vowed to protest until Morsi was released from detention and reinstated.
The ousted president's family on Monday said it would take legal action outside Egypt against the military for kidnapping the ex president, saying they had not heard from him since he was thrown out from the presidential post.
The European Union, the United Nations as well as Washington had urged the interim government to release Morsi and hand over the leadership to an elected democratic government.
"An inclusive and sustainable democracy where all sectors of society, where all Egyptian people are fully represented, will represent all sides. And we feel that includes of course the Muslim Brotherhood and other representatives that have been detained," said U.S. State Department spokeswoman Jen Psaki.
"Moving forward with an inclusive process is what we would like to see. And while, yes, we of course recognize that President Morsi was democratically elected, the question, and I have said this before as have many other officials, it's about more then what happens at the ballot box. Most democratic transitions take years to take root and stabilize, especially following decades of autocratic rule," said the spokeswoman.