Maldivian authorities have arrested the nation’s Vice President Ahmed Adheeb over a plot to assassinate President Abdulla Yameen, who escaped death after his boat was hit by a bomb.

“VP Adheeb under arrest and held in Dhoonidhoo Detention (prison island),” Home Minister Umar Naseer said on Twitter. “Charges: high treason.”

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Yameen had appointed his deputy Adeeb, 33, three months ago after impeaching his original running mate Mohamed Jameel, also on charges of treason.

Ten days ago, Yameen sacked his defence minister Moosa Ali Jaleel after the explosion aboard his speed boat as he returned home after a pilgrimage to Saudi Arabia.

Maldivian authorities have arrested two security personnel who had access to Yameen’s boat but have yet to disclose what caused the explosion.

The security shake up followed a reshuffle of key officials in the wake of the September 28 explosion aboard Yameen’s boat, as he was about to disembark at the capital island Male.

The Maldivian leader was unhurt in the blast but his wife and two others suffered minor injuries.