DUBAI (Reuters) - Al-Jazeera television broadcast on Monday what it said was the videotaped will of one of the suspected September 11 hijackers, in which he vowed to kill Americans and die a martyr.

"It is high time that we killed Americans in their home," said the man it identified as Ahmed Alghamdi, a Saudi believed to be one of the 19 who guided airliners into the World Trade Center and the Pentagon.

"Lord I regard myself as a martyr for you so accept me as such," said Alghamdi, bearded and wearing a checkered Arab headdress in the brief excerpt of the taped message.

An official at Jazeera said the full tape would be aired on Thursday.

The Qatar-based satellite station said in a statement the videotaped message was recorded in the Afghan city of Kandahar six months before the September 11 attacks, according to information on the film. The station refused to say how it obtained the tape.

Washington blames Osama bin Laden's al Qaeda network for the suicide attacks that killed more than 3,000 people in New York and Washington.

"The footage... is considered to be the first evidence linking bin Laden and his al-Qaeda network to the attacks on New York and Washington," Jazeera said in the statement. The Jazeera official, who had seen the full tape, said Alghamdi did not name al Qaeda or mention the planned hijackings.

The station said Alghamdi's message came as part of a "documentary" entitled "The Wills of the New York and Washington Battle Martyrs." It also included "shots of various al Qaeda leaders," it said without giving details.

Jazeera gained fame for its coverage of U.S. military strikes on Afghanistan and broadcasts of videotaped statements by Osama bin Laden.