The Port Said prosecution issued an order on Wednesday to detain the 15 defendants who are accused of instigating the clashes in Port Said over the past week.

The defendants are to be deported to a public prison in Damietta on Saturday. They are detained for four days pending investigations.

The prosecution accused the defendants with "vandalizing public property, theft, killing two police officers and attacking police installations."

Investigations were conducted amid tight security to protect the courts complex buildings in Damietta.

The violence erupted in the city of Port Said after the court sentenced to death 21 defendants accused of involvement in killing 74 people during riots that broke out after a football match in Port Said last Febuary

President Mohamed Mursi on Sunday imposed a curfew from 9 p.m. to 6 a.m. and declared a state of emergency in Port Said, Suez, and Ismailia for 30 days.

Over 40 people were killed and 630 were injured as a result of the violence since Saturday.