Sentul district police chief ACP Zakaria Pagan said the incident happened at about 2.55am but no one was hurt as the bomb did not explode.

During the incident, Ms Kok's parents and younger sibling were home.

Ms Kok, who was recently released after a week-long detention under the tough Internal Security Act (ISA) said, a piece of paper with a warning message was also flung into the compound of her family home in Kuala Lumpur during the dawn incident.

'I am deeply saddened and most perturbed upon hearing from my family first thing this morning that some criminal elements have thrown a Molotov cocktail into the compound of my residence,' she said in a statement.

Ms Kok said she was called a 'pig' in the message and warned to 'stay out of trouble or you and your family will be burned.'

'The family was very shaken and now fear for their safety. I am deeply concerned about the personal safety of my family now,' Ms Kok said.

'I view this act as most despicable and criminal which is designed to instill fear, anxiety in me and to prevent me into performing my duties as an elected representative,' said Ms Kok, who is of the Democratic Action Party (DAP).

Ms Kok was arrested on September 12 under the ISA, which drew public outrage and the minister responsible for legal affairs resigned over a series of arrests under the security law.

The ISA, which human rights groups have pushed to have abolished, allows for renewable two-year periods of detention without trial and is normally used against terror suspects.

Police said they arrested Ms Kok because she was involved in a petition to silence the call to prayer in mosques in non-Muslim areas.

Ms Kok has denied making such complaints.

She said on Saturday that actions by 'certain media groups and blogs' that have painted her as anti-Malay and anti-Islam in the Muslim-majority country may have stoked contempt and hatred against her and her family. -- AFP, BERNAMA