"PDRM has issued a release regarding the arrest of four suspected of radicalism or terrorism. Of those four people, there is a person suspected of being an Indonesian citizen," said the ministry's Director of Indonesian Citizen Protection and Indonesian Legal Entities Lalu Muhammad Iqbal via a text message on Tuesday.
According to Iqbal, the Indonesian Embassy in Kuala Lumpur had requested consular access to the PDRM to verify the documents and citizenship of the suspected terrorists.
In addition to Indonesian citizens, the suspects include a Malaysian and two Rohingya people.
The four people were arrested by the PDRM from 5-7 May 2019 for planning large-scale killings and terror attacks in the Klang Valley.
Inspector General Police Abdul Hamid Bador said the four had claimed to be members of ISIS and were preparing to attack during the first week of Ramadan to avenge the death of a firefighter named Muhammad Adib Mohd Kassim. Muhammad Adib died on December 17 last year after he was seriously injured amid chaos at the Sri Maha Mariamman Seafield Temple in Selangor, where riots erupted over the relocation of the temple.
An examination of his death is ongoing, according to officials.
"They planned to kill famous people who they accuse of not supporting Islam or insulting Islam," Abdul Hamid said.
"In addition, they were also planning massive attacks on Christian, Hindu and Buddhist places of worship and entertainment centers in the Klang Valley," he told reporters at the police headquarters in Bukit Aman, Bernama reported.
One of the suspected terrorists who is a Rohingya refugee claimed to be a supporter of the Arakan Rohingya Liberation Army (ARSA). He had planned to attack the Myanmar Embassy in Kuala Lumpur and continue his jihad in Rakhine State.