The Nation reported on Tuesday morning that four officers, in a Subaru, camped at the residence located on Tebere Crescent off Kangundo Road since midnight while three others, in an armoured personnel carrier, arrived at 6.30am.

Mr Arati, who is a staunch supporter of the National Super Alliance (Nasa) and its leader Raila Odinga, told the Nation that the officers were searching all vehicles entering and leaving his home.

Meanwhile, Nasa brigade is expected at Jacaranda Grounds for a memorial service whose attendants Mr Arati was to assemble.

“I am the mobiliser for Jacaranda meeting so I think this is related. They know if my supporters learn of the siege there will be a problem so that’s why they have brought the armoured car," he said.

Nairobi Police commandant Japheth Koome denied any police deployment to Simba Arati's house.