Former deputy Prime Minister Tan Sri Muhyiddin Yassin has asked for a confirmation from the Registrar of Societies (RoS) on whether his suspension as Umno deputy president is valid. 

"My suspension was not in accordance with the Umno constitution and I have sent a letter to the RoS seeking an explanation as to whether my suspension was valid and in accordance with the party’s constitution," he said. 

He said RoS will determine if the Umno supreme council had overstepped its constitutional powers when it abruptly suspended him as deputy president in February this year.