JAKARTA, Indonesia — The AirAsia plane that crashed into the Java Sea last month had climbed at excessive speeds to an unusually high altitude before plunging and disappearing from radar, Indonesia’s top transportation official said Tuesday.

Radar data showed that the Airbus A320-200 had been climbing at about 6,000 feet a minute before it crashed, killing all 162 people aboard, Ignasius Jonan, the minister of transportation, told a parliamentary commission.

“It is not normal to climb like that; it’s very rare for commercial planes, which normally climb just 1,000 to 2,000 feet per minute,” he told lawmakers, The Associated Press reported. “It can only be done by a fighter jet.”