SINGAPORE - One of the two passengers in the car that crashed through security barriers near Shangri-La Hotel last month was accused on Monday of abetting the driver to commit a rash act to endanger the personal safety of two cops.

Muhammad Syahid Mohamed Yasin, 26, is alleged to have shouted "jalan jalan'' (Malay for go) to the driver of the red Subaru Impreza, Mohamad Taufik Zahar, 34.

Taufik suddenly accelerated towards Mr Mohamad Zahid Suhaimi and Ms See Toa Chew Yin and crashed into a concrete barrier along Ardmore Park at about 4.15am on May 31.

The police opened fire on the vehicle. The car, which had a single bullet hole in the front windscreen, came to a stop on a grass patch barely 250m from the hotel entrance. Taufik was pronounced dead at the scene.

The area around the hotel had been placed under a tight security net, as it was hosting a major security summit attended by defence ministers and security chiefs.

Syahid and co-accused Mohamed Ismail, 31, were charged last week with having three packets of about 9g of heroin for the purpose of trafficking along Orange Grove Road that morning. Mohamed's charge was read to him in hospital as he was wounded during the incident.

Deputy Public Prosecutor Yang Ziliang applied for the duo to be remanded for another week at Central police division for investigation to be completed.

He is also asking for DNA and consumption reports.

District Judge Eddy Tham granted the application and fixed the case for mention again on June 15.

The maximum penalty for drug trafficking is 20 years' jail and 15 strokes of the cane.

For abetment to commit a rash act, the punishment is six months' jail and a $2,500 fine.