Four journalists for the newspaper New York Times were reported missing while covering the war in Libya, the paper informed on Wednesday.

The newspaper said the journalists were last in touch with their editors from the town of Ajdabiya on Tuesday morning.

The journalists include Anthony Shadid and Stephen Farell. Shadid is a two-time winner of Pulitzer Prize while Farell is a videographer and reporter who was also kidnapped in 2009 by the Taliban group and was saved by the British commandos.

Also, two photographers are missing who include Lynsey Addario and Tyler Hicks, the New York Times reported.

The New York Times’ executive editor Bill Keller said they have already talked with the Libyan government officials in Tripoli. The Libyan officials said they are trying to determine the journalists’ whereabouts.

Keller said the government of Libya had assured them that the journalists would be freed promptly and unharmed once they have known that they are captured.

Last week, a reporter from Brazil was released by the government forces in Libya. However, a journalist from the newspaper Guardian in Brazil is still missing.

A news team from BBC also informed last week that it had been arrested at a checkpoint by the security forces in Libya. They said they were beaten and submitted to mock execution.

A revolt occurred in Libya last month, a time when Muammar Gaddafi, Libyan leader since 1969, lost control of a large group in the country. However, Gadaffi’s security forces have battled back since then.