Umno is scrutinising the names of protesters involved in the Taman Medan church protest to determine who among them are party members.

"We are investigating," Umno secretary-general Tengku Adnan Mansor told Malaysiakini .

"The whole list of names has now been scrutinised by (Umno) headquarters to check the authenticity of whether they are Umno members or not," he added.

He said action would be taken against them once the police conclude their investigations into the case which is being probed under the Sedition Act 1948.

"We can only take action after the police have taken action against them. We will send them show-cause letters," he added.

Tengku Adnan ( right ) said members would face punishments based on what is provided by the Umno constitution.

He also stressed that Umno did not condone the protest, which drew widespread condemnation, including from BN leaders.

"Umno is not involved at all, they can be members of Umno, but Umno did not ask them to do that.

"We are very upset. We have told them this shouldn't happen. It is unbecoming because we live in society that is multi-ethnic and multi-religious,” he added.

Asked if the church should be allowed to restore its cross to the original position, Tengku Adnan said it was a matter for the Petaling Jaya City Council (MBPJ) to decide.

"If the local council allows them to do so then they can do so," he added.

Two Umno members have been identified by media reports as being present at the protest.

These are inspector-general Khalid Abu Bakar's brother Abdullah ( left ), who is the Taman Lindungan Jaya Umno branch chairperson and former Umno candidate for the Taman medan state seat Munaliza Hamzah.

On Sunday, some 50 Muslim residents demanded that the church lower a cross on its building and the pastor agreed.

The police chief, however, ruled out seditious elements while his brother claimed that he was present to mediate between the protesters and church officials.

However, Home Minister Ahmad Zahid Hamidi said the protest was seditious and Prime Minister Najib Abdul Razak also warned that the protesters could face the Sedition Act.