An Iraqi has been arrested in Amman in connection with three rocket attacks aimed at US warships moored in the port of Aqaba and at neighbouring Israel, according to a security source.
"Security forces arrested the Iraqi suspect [on Saturday] while he was driving his car," the source said on condition of anonymity.
AFP reports that four suspects, including one Iraqi, were arrested late on Saturday in Amman in connection with the rocket attacks.
The Iraqi was one of four suspects being sought by authorities.
The source did not specify where the man was apprehended.
Three Katyusha rockets were fired from the port on Friday, one of them missing two US warships anchored nearby but killing a Jordanian soldier as it smashed into a warehouse. No US troops were harmed in the attack.
Another landed close to the airport in the adjacent Israeli resort of Eilat. The third struck a site near a military hospital.
Earlier, Jordanian authorities found the launcher that fired three Katyusha rockets from a hilltop warehouse.
Two other rockets were fired towards Israel from the same warehouse, which is in the hills on Aqaba's northern edge, about 8km from the port.
"We have found the rocket launcher in the warehouse from where they fired," Jordanian Interior Minister Awni Yirfas said on Saturday in what marked one of the first breakthroughs in the investigation.
"The investigation is still under way, and issues related to it will remain secret so it would not harm the process," Yirfas said.
"I cannot give you the names or say if we are looking for the perpetrators in the desert or any other place."
Jordanian security forces are searching for six people, including one Syrian and several Egyptians and Iraqis, who are believed to have escaped in a vehicle with Kuwaiti licence plates after firing the rockets.
An al-Qaida-linked group, the Abdullah Azzam Brigades, said in an internet statement that it staged the attack, but the claim could not be authenticated.
The group was among several organisations that claimed responsibility for bombings in three Egyptian Sinai Peninsula resorts during the past year that killed around 100 people.
Jordan's King Abdullah II, who is expected to return to Jordan on Saturday after a state visit to Russia, condemned Friday's attacks.
Until last year, the Red Sea area including Egypt's Sinai had seen no violence, but since October the area has seen a series of attacks.
PHOTO CAPTION
Jordanian forensic experts collect evidence after a Katyusha rocket struck the Red Sea port of Aqaba. (AFP)