Two people have been injured in multiple car explosions in northern Gaza City, Palestinian security sources said.
The sources said six explosions took place at same time on Sunday morning in the Sheikh Radwan neighbourhood.
The cars belonged to officials of Islamic Jihad, Hamas and its armed wing, the Qassam Brigades.  

Al Jazeera's Tamer Almisshal, reporting from the scene of one of the explosions, said Palestinian authorities had closed off access to the sites.
"They (officials) have started their investigations but so far there hasn't been a statement from the interior ministry," Almisshal said.
There was no immediate claim of responsibility for the attacks but an Al Jazeera correspondent in Gaza noted that Sheikh Radwan witnessed fighting between Hamas security forces and fighters loyal to the Islamic State of Iraq and the Levant (ISIL) group in early June.
ISIL threatened Hamas in a video shared online earlier this month, vowing to end the faction's rule in the territory.
The six explosions took place at same time on Sunday morning [Al Jazeera]