Mr. Dar says some producers are already responding by withholding less-expensive gas supplies from the spot market.
The flight was on a scheduled run from Addis Ababa to Bahar Dar to Asmara, the capital of northern Eritrea province.
The pilot tried to turn the plane back to Bahar Dar, but failed and crashed into marshy ground 14 miles south of the airport.
And if Dar Allen did commit any fraud, the reply says, then American Centennial is "victim rather than perpetrator."
The latest brochure on Zanzibar from the tourist office in Dar was printed in 1983 and speaks of "up to four flights daily" and "several passenger ferries."
John Paul flew from the country's commercial capital, the port city of Dar es Salaam, 380 miles to southwestern Songea to celebrate Mass.
Another 35 people have been hospitalized in the epidemic, which began around the district capital, Singida, 350 miles west of the Indian Ocean port of Dar es Salaam, the Shihata news agency said.
He also managed to send a secret distress signal to the control tower at Dar es Salaam.
In 1984, four men claiming to be members of a group called the People's Democratic Movement of Tanzania hijacked a Tanzania Airways jet on an internal flight from Mwanza, a Lake Victoria trading center in western Tanzania, to Dar es Salaam.
Do you expect anyone to celebrate anything?" said Sheik Rashid, a Sunni Moslem clergyman at the Dar al-Fatwa center.
Dar es Salaam is the seedy capital of Tanzania, a huge, seedy nation.
Last month, passengers flying to Zanzibar from Oman were told to disembark in Dar because the plane was being rerouted.
"While a multiparty system would be suitable for Europeans, it might not be the same with Tanzania," Mwinyi told reporters in Dar es Salaam.
Carter and his party leave Dar es Salaam on Sunday for neighboring Kenya.
The sources said the hijacking occurred Saturday night aboard a Tanzania Airways' flight between Dar es Salaam, the capital, and Kilimanjaro, the northern town near the Kenya border.
Freight will be transported in stages by road to Lake Malawi, container vessel across the water, by road again to the Tanzanian border, and then by the Tazara railway to the port of Dar es Salaam.