A 67-year-old woman, who was hit by a bicycle wheel allegedly thrown by a teenage boy from the 14th floor of an HDB block of flats in Eunos Crescent, died in hospital last Friday night.

Madam Mahani Abdullah had undergone emergency spinal surgery at the Singapore General Hospital after the wheel hit her on the head on May 16.

Last Tuesday, while she was in a high dependency ward following the operation, her heart stopped. Doctors managed to resuscitate her, but she slipped into a coma.

After state prosecutors learnt that Madam Mahani's condition had worsened, the charge of a rash act against teenager Abdul Hamid Rahmat, 16, was amended to one of grievous hurt last Friday.

Madam Mahani died later that night, her niece, Ms Nadia Abdullah Sani, told The Sunday Times yesterday.

She leaves two sons aged 38 and 35 and a 29-year-old daughter who is bedridden.

Abdul Hamid had been out on police bail over four "killer litter" offences at the time he allegedly hurt Madam Mahani.

Deputy Public Prosecutor Goh Yi Ling successfully applied for the teenager's bail to be revoked last Friday "in the public interest" as "he is a clear danger to the public".

He is accused of throwing bricks from the same block on three occasions. One allegedly caused grievous hurt to Myanmar national Kyi Phyu Phyo Wai, 26, who broke his hand after it hit him on Dec 13 last year.

In the fourth incident in August last year, he apparently threw two ceramic tiles, a water dispenser and a 5kg dumbbell from high floors in the block.

Abdul Hamid is next scheduled to be mentioned in court on June 17.