Five people have been killed in an attack on Jordanian intelligence officers at a Palestinian refugee camp on the outskirts of the capital, Amman, government officials say.
They described the incident, rare in Jordan, as a “terrorist attack”.
Three of the five people killed were intelligence officers, the officials said.
The attack took place at the sprawling Baqaa camp north of Amman at about 07:00 local time (04:00 GMT).
No-one has yet said they carried out the Baqaa attack.
Jordanian government spokesman Mohammed Momani said the “cowardly” attack targeted the intelligence agency office at the camp.
He gave no details of the attack but said it was carried out by those with the “criminal behaviour of people who are outside of our religion”.
Mr Momani said two of those killed were a guard and a telephone exchange operator.
He said security forces were hunting the attackers.
The attack took place on the first day of the Muslim holy month of Ramadan.
In March, Jordan said it had foiled planned attacks by so-called Islamic State when a military raid in the city of Irbid left seven suspected jihadist militants dead.
The UN Relief and Works Agency (UNRWA) says Baqaa is the largest camp in Jordan.
It is believed to house more than 100,000 refugees.
UNRWA says the camp continues to face major challenges, including unemployment, poverty and the need for structural repair.
More than 80,000 Syrians live in Jordan’s second largest refugee camp, Zaatari.
Earlier this year, King Abdullah said his country was at “boiling point” because of the influx.