Abdullah Abu Bakar had stepped into the Petaling Jaya police headquarters at about 4pm. He only emerged some four hours later.

When reporters crowded around him, the brother of Inspector-General of Police Khalid Abu Bakar said he was exhausted by the extensive questioning session.

"I have given information to the police and given all my statements. I think three hours of questioning is very long for me and I am too tired.

"I just hope everything is going to be okay," he added.

Asked if the police quizzed him on whether he was involved in a demonstration to force a church in Taman Medan to remove its cross, he replied: "The authorities have asked me on all aspects and I have answered."

To another question, Abdullah said he was not told what section he was being investigated under.

"They told me what it's all about, I have given all my cooperation.

"I reserve my comments but I want to thank everyone of you for waiting for me," he added.

Earlier this afternoon, Abdullah, who is an Umno branch leader, told Malaysiakini that he would not bring a lawyer along since it was a "small matter".

Abdullah had arrived at the police headquarters with his driver in a black Toyota Land Cruiser four-wheel drive.

He did not speak to journalists and immediately went upstairs.

Yesterday, Prime Minister Najib Abdul Razak said the police would investigate the protest and action could be taken under the Sedition Act 1948.

He also ticked off the protesters for resorting to an action that caused unease in a multiracial society.

Abdullah, who was initially said to be leading the protest, had claimed that he was present on Sunday to mediate between the Muslim residents and the church officials.

The police chief, who cleared the protesters of sedition, said he would not interfere if his brother was investigated over the incident.