There was no immediate comment from the movement, which has operated legally in Jordan for decades and has widespread grass-roots support in major urban centres and scores of offices across the country.
Jordan said last week it had arrested 16 Muslim Brotherhood members, saying they were trained and financed in Lebanon and were plotting attacks involving rockets and drones on targets inside the kingdom.
Jordan also attributed a foiled plot in 2024 to a Muslim Brotherhood cell in Jordan.
Fraya said all the activities of the group would be banned and anyone promoting its ideology would be held accountable by law.
The ban includes publishing anything by the group and closure and confiscation of all its offices and property, he added.
The Muslim Brotherhood, one of the Arab world's oldest and most influential Islamist movements, has denied links to the alleged plot but admitted members may have engaged in an individual capacity in arms smuggling to Palestinians in the occupied West Bank.
Opponents of the Brotherhood, which is outlawed in most Arab countries, call it a dangerous terrorist group that should be crushed.
The movement says it publicly renounced violence decades ago and pursues an Islamist vision using peaceful means.
A court had ordered the dissolution of the Muslim Brotherhood in 2020, in what analysts saw as a bid to limit their group's influence in the kingdom, but the group remained instrumental in the political scene.
The movement's political arm in Jordan, the Islamic Action Front, became the largest political grouping in parliament after elections last September although most seats are still held by supporters of the government.
Fraya said Muslim Brotherhood members had planned attacks on security targets and sensitive locations in the kingdom, aiming to destabilise the country, but did not disclose what these targets were.
Security forces said last week they had found a rocket manufacturing facility alongside a drone factory where short-range rockets were being developed, with at least one missile ready to be launched.
In a country where anti-Israel sentiment runs high, Muslim Brotherhood members have led some of the largest protests in the region in support of Hamas, their ideological allies, in what their opponents say allowed them to increase their popularity.
Like some of its neighbours seeking to curb political Islam, Jordan has been tightening restrictions on the Brotherhood in the last two years, forbidding some of its activities and arresting vocal anti-government dissenters.
International rights groups say that in the last four years Jordanian authorities have intensified persecution and harassment of political opponents and ordinary citizens using a string of laws to silence critical voices.
The Jordanian government says it tolerates public speech that does not incite violence.
The Muslim Brotherhood was founded in Egypt about 100 years ago, where it is now banned and classified as a terrorist organisation.
with DPA
