It says there is no proof of foreign object ingestion in the engine components.

It says the pilots had no known medical conditions that could have posed significant hazards to flight safety.

It says this is due to the collision pattern and magnitude of the crash, which were beyond the limit of human tolerance.

The preliminary report will be released on the transport ministry's website at 10am.

This includes the final 30 minutes of voice recording captured on the memory puck before the crash.

Nomination will be held on Sept 23, and early voting on Oct 3.

These include the dates for the issuance of election writ, nomination and polling, as well as the electoral roll to be used and other preparations for the by-election.

Selangor police chief Hussein Omar Khan says investigations are still ongoing and that for now, the crash is considered a 'mere accident'.

This comes after the Singaporean investigators faced difficulties retrieving the data from its intact memory puck.

Eight Air Accident Investigation Bureau officers are also involved in the investigation.

The Air Accident Investigation Bureau was unable to retrieve the last 30 minutes of the voice recording data as Malaysia does not have the equipment to do so.

Norsyahirah Omar says it was something her late brother, Shaharul Amir, never does.