Violent clashes between the supporters and opponents of ousted Egyptian President Mohamed Morsi continue in Cairo, with the death toll rising as a result.Since Monday, at least 14 people have been killed in the unrelenting clashes between Morsi’s fans and his opponents. Egypt’s Muslim Brotherhood said on Wednesday that plainclothesmen fired on pro-Morsi demonstrators in Cairo, killing two people. However, a security force has confirmed the death of only one person. The developments came as another person was killed and dozens wounded in a grenade attack on the security headquarters in Cairo’s northern province of Daqahlia, security officials said early Wednesday. The Egyptian Interior Ministry warned on Tuesday that it would deal with any unruliness “firmly and decisively,” calling on the protesters to maintain peace. On Monday, Egyptian interim President Adli Mansour urged national reconciliation, saying it is paramount for the North African country to move forward. Egypt has been the scene of rival rallies, often resulting in deadly clashes, since July 3, when the country’s army ousted Morsi in what has been described by the supporters of Morsi as “a military coup.” The military also installed Mansour as the country's interim president on July 4. Morsi has been held at an undisclosed location since his overthrow.