Tan Sri Muhyiddin Yassin will be treated professionally by the Registrar of Societies (ROS) if he wants to file a complain on his suspension as UMNO deputy president, said Deputy Prime Minister Datuk Seri Ahmad Zahid Hamidi.

Ahmad Zahid, who is also Home Minister, said ROS was a government department that was run professionally and that all individuals including leaders or former leaders who lodge complaints with it would be treated in a professional manner.

"ROS can evaluate for itself the punishment handed down to Muhyiddin by UMNO's Supreme Council.

"I wish to make it clear that ROS acts without fear or favour. All who lodge complaints with it are given equal treatment," he told a press conference here today.

Earlier, he had opened the Sungai Rambai Rural Transformation Centre (RTC) here.

Also present were Melaka Chief Minister Datuk Seri Idris Haron and Rural and Regional Development Minister Datuk Seri Ismail Sabri Yaakob.