Jordanian public prosecutors have started summoning several suspects accused of concealing Muslim Brotherhood financial and property assets, state media reported on Thursday, in the latest sign of the kingdom’s escalating crackdown against the Islamist group.

What happened: The official news agency Petra reported that an unspecified number of individuals were summoned to the public prosecutors this week “in connection with concealing assets belonging to the banned Muslim Brotherhood group.”

The Jordanian Ministry of Social Development granted a one-month grace period ending on June 14, instructing anyone holding assets on behalf of the Muslim Brotherhood to come forward before they would be referred to judicial authorities. Some individuals listed as co-owners of real estate admitted they had held the properties on behalf of the group, while others said they had held funds for the group in bank accounts. The property and funds were transferred to the ministry, according to Petra.

Holding assets for the Muslim Brotherhood could lead to money laundering, breach of trust and other charges, the agency reported, adding that relinquishing the assets could allow individuals to avoid prosecution.