Hamas dismissed an Israeli media report about the details of the assassination of the Iran-backed group's leader Ismail Haniyeh in Tehran.

"The Israeli regime's claim that martyr Haniyeh was assassinated using a bomb at his official residence in Tehran is completely baseless," Hamas said in a statement.

The group added that joint investigations with Iranian security agencies revealed the operation involved a 7.5-kilogram guided missile that directly targeted Haniyeh's mobile phone.

On Saturday, Israel’s Channel 12 reported that an explosive device was planted in advance in Haniyeh's bedroom in the Neshat compound of the Revolutionary Guards, before an air conditioning malfunction almost jeopardized the entire operation.