No one was killed or injured in the January 14 attack, which took place as four diplomats and two security guards were heading to Israel for the weekend from Amman, according to reports.
It was the first roadside bombing in Jordan and exposed a security gap for Israeli diplomats.
Separately, more than 40 people were arrested in relation to the Jordanian who blew himself up in Afghanistan in December, killing seven CIA agents, a Jordanian security official said on Sunday.
"More than 40 Jordanian jihadists, including ex-convicts, have been arrested following the Khost attack," the official told the AFP news agency on Monday.
"They were arrested in several parts of Jordan for interrogation."
Humam Khalil al-Balawi blew himself up at a US military base in Khost near the Pakistani border on December 30, killing seven CIA agents and his handler - a senior Jordanian intelligence officer and member of the royal family.