Syrian refugees angry over harsh living conditions in their desert tent camp rioted and clashed with police on Tuesday.
Some 150 refugees hurled stones at Jordanian police, injuring 26 security officers.
They also torched a tent and attacked offices of the Jordanian charity hosting the camps, according to one police official.
A charity spokesman says closer to 1,000 refugees were involved in the riots.
Protestors at the Zaatari camp demanded better conditions, food and education for their children.