PROTESTERS have fired two rockets at a police station in the northern Sinai town of Sheikh Zuweid, but one missed it and hit a nearby medical centre, security officials say, hours after police shot dead a protester.
There were no immediate reports of casualties from the medical centre.
The other rocket propelled grenade landed in an empty space, officials said.
A correspondent reported protesters also fired an RPG at a police station three kilometres from the town, setting it on fire.
The checkpoint had been evacuated earlier in the day.
The protesters were Bedouin, some of whom are heavily armed and complain of government discrimination.
Unrest in Sinai takes place occasionally and picked up on Tuesday to coincide with nationwide anti-government protests.
Clashes broke out in Sheikh Zuwayed earlier on Thursday after witnesses and relatives said a youth died when he was shot in the head by police during a firefight.