The Committee to Protect Journalists has sent a letter to Pakistan President Pervez Musharraf [Images] to protest against the brutal attacks on journalists by security personnel during the arrival of former prime minister Nawaz Sharif in Islamabad.

''According to reporters, the violence during the arrival of  Nawaz Sharif in Islamabad on Monday, went far beyond the pushing and shoving that can occur at such breaking news events,'' states the letter.

While journalists complained of excessive manhandling by the authorities, CPJ has been told of at least two incidents in which security personnel at the Islamabad airport repeatedly struck and kicked television reporters.

Fakhar-ur-Rehman, the defense correspondent for Aaj TV, who also works for the US television network NBC and Turkish National TV, was assaulted without warning in the public arrival area of the airport by three plainclothes men as airport security personnel stood by and watched. According to Rehman, the men attacked him as he was using his mobile phone to do an interview for his TV station.

Rehman was dragged from the public area to a corridor and then taken to a small room where ''they continued to hit me with all their might,'' the letter quoted him as saying. He eventually had to be hospitalised on Tuesday.

In a separate incident, cameraman Talat Farooq was assaulted by security personnel in the parking lot of the airport. According to Huma Ali, president of the Pakistan Federal Union of Journalists, Farooq was hit repeatedly until he was no longer able to work. The assault on him came as part of a widespread scuffle as security guards drove journalists from the airport building, the letter said.

Several journalists, including those who had arrived on the plane with Sharif from London [Images], told the CPJ that the security guards were much more aggressive than usual.

''Outright attacks like these by the government's security apparatus are unacceptable,'' CPJ said in the letter. ''The government must act immediately to investigate how and why its security forces were allowed to lose control, and then bring those responsible to justice.''

Copies of the letter were sent to Minister for Information and Broadcasting Mohammad Ali Durrani and US Ambassador to Pakistan Anne W Patterson.

CPJ is a nonprofit body working towards safeguarding the freedom of news media around the world.