Islamabad: The US government on Sunday prohibited its staff from visiting  Marriott Hotel in Pakistan's Islamabad city  due to possible attack.

"The U.S. government is aware of information that unknown individuals are possibly plotting to attack Americans at the Marriott Hotel in Islamabad sometime during the holidays," read a statement issued by  US embassy in Islamabad.

"Effective immediately, the Embassy in Islamabad is prohibiting all American staff from visiting Islamabad’s Marriott Hotel," read the statement.

"Furthermore, as Islamabad has been placed on a Red Alert citing security concerns while banning all public gatherings, the embassy is urging all Mission personnel to refrain from non-essential, unofficial travel in Islamabad throughout the holiday season," the statement mentioned.

The prohibition has been issued by the US government just two days after a suicide bombing in the capital killed a policeman and wounded six others.