Bush says he will pursue any clue to rescue Wall Street Journal reporter

ISLAMABAD, Pakistan (AP) -- President Bush vowed Friday to pursue any clue that could lead to the rescue of kidnapped reporter Daniel Pearl, a day after a deadline for killing the journalist was extended.

"We are working with the Pakistan government to chase down any leads possible -- for example, trying to follow the trail of the e-mails that have been sent, with the sole purpose of saving this man, of finding him and rescuing" him, Bush said.

It was impossible to determine whether Thursday's unsigned e-mail, received by Western and Pakistani media, was actually sent by the kidnappers. The 38-year-old Wall Street Journal reporter was abducted Jan. 23 in Karachi while working to secure an interview with the founder of an obscure militant Muslim sect.

Secretary of State Colin Powell on Thursday ruled out bending to the group's demands.