However, the man has no history of contact with sick fowl.
According to Supari, although Iwan Siswara Rifei had developed symptoms of bird flu, his two daughters, who also died, tested negative.
Supari says, "There's strong suspicion that the father was infected with bird flu but we still have doubt about the test results. So we have sent the samples to Hong Kong for a second opinion."
Supari says the results for all three family members could be announced in seven days.
She once again reiterated the man and his family had no history of contact with sick fowl or foreigners during the past four months.
Meanwhile, World Health Organization spokeswoman Sari Setiogi has declared the UN body is taking Rifei's death as a "suspected case" of H5N1 infection.
They are awaiting test results.
The H5N1 type of bird flu chiefly spreads between animals. The virus has killed more than 50 people in Southeast Asia since 2003.
