His elder sister, Natasha Fireen Idris, 31, said the family disputes the classification of Khairul’s case as sudden death and wants the police to further investigate.

Speaking on the family’s behalf, Natasha said Khairul had phoned his wife minutes before he fell to his death at the Plaza Indah P6 apartments on June 8.

She said Khairul’s wife, while on the line, overheard an argument going on, while Khairul did not say a word.

“During the incident, he called his wife but didn’t say anything. His wife overheard the voices of a man (not Khairul) and another woman, and it sounded tense.

“The man was heard saying ‘lu mari sini naik atas’ (you come here, let’s go upstairs),” she told FMT.

After a while, Natasha said, the phone went silent. Khairul’s wife then rushed home where she found him lying motionless with his head bleeding on the grounds of the apartment building.

Natasha said their neighbours had also heard the altercation with the unknown persons.

She appealed to the police to further investigate Khairul’s death, saying it was highly unlikely that he had jumped off the building as he was afraid of heights and had no personal issues.

“We just want justice for him. We are only members of the public and cannot force any witnesses to cooperate, so we hope the police will reopen the case,” she said.

Khairul was the third of four siblings. He is survived by his wife and a nine-month-old daughter.

In a statement, Kajang police had said they received a distress call about a man who fell from the apartment building landing on the rear windscreen of a car.

The then Kajang police chief Zaid Hassan said preliminary investigations by a forensic team found no criminal elements, with the case classified as sudden death.

When contacted, newly appointed Kajang police chief Naazron Abdul Yusof said the case’s classification remains for now, pending further developments.