KUALA LUMPUR, July 8 — The police denied today issuing a security alert warning the public to stay away from a list of nine locations in the Klang Valley that are purportedly targeted by global terror group Islamic State (IS).

Inspector-General of Police Tan Sri Khalid Abu Bakar clarified on his official Twitter account that the alert did not originate from the police force.

"This alert is not from @PDRMsia,” he posted, using the Malay initials for the Royal Malaysian Police.

The alleged security alert circulating on social media claims the Malaysian government has confirmed the IS will mount an attack on the places in the list which included tourist attractions like the KL Tower, popular shopping malls and LRT stations.

It also claimed that Malaysia is the "next target for bombing according to special branch”, referring to the police intelligence unit.

Earlier this week, Khalid confirmed that the June 28 grenade attack which injured eight people at a bar in Puchong was the first successful attack in Malaysia linked to the IS.

Khalid said the 15 Malaysian male suspects arrested following the attack were believed to have either been planning or received instructions to attack entertainment outlets which they deem "un-Islamic", as well as senior members of the government, police force and judiciary.

Transport Minister Datuk Seri Liow Tiong Lai had on Wednesday said that security will be tightened at all airports and train stations nationwide, with airport-like screening at the KL Sentral hub to be used on all passengers headed to the airports.

Following the grenade attack, Australia updated its travel advisory on Malaysia yesterday, urging its citizens to be particularly vigilant at this point of time. The UK similarly included the June 28 attack in an updated travel advisory.

The US Embassy in Kuala Lumpur posted a Facebook message yesterday, informing US citizens of the June 28 incident.