STOCKHOLM — A single-engine plane crashed on a small island in northern Sweden killing all nine people onboard, the authorities said on Monday.
The plane took off from a regional airport near the university city of Umea at 1:30 p.m. and crashed on a tiny island in a river not far away, according to Malin Axroth, a police spokeswoman.
Ms. Axroth said that it appeared the plane had been in the air for a short time and that the first report of a crash came in at 2:10 p.m.
The cause is under investigation, the Swedish Accident Investigation Authority said.
In a statement on Sunday, Prime Minister Stefan Lofven of Sweden expressed “great sorrow” about the crash. “My thoughts go to the victims and their families at this difficult time,” he said.
Robert Pletzin, a spokesman for the airport operator, said on Monday that the plane — a GippsAero GA8 Airvan — was often used for parachuting, and it seemed that this had been the purpose of Sunday’s outing.
The pilot and the eight passengers were Swedish citizens, with one holding dual United States citizenship, according to Ms. Axroth, the police spokeswoman.
Per-Olov Humla, the chairman of the Swedish Parachute Association, said by phone on Monday that the passengers were all members of the local parachute club.
“It’s an enormous tragedy,” Mr. Humla said, but he emphasized that the crash was not a parachute accident. “It’s an airplane-related one,” he said.
Peter Swaffer, who is part of the accident investigation team, said by phone on Monday that the inquiry was “an ongoing process.”
“It’s our first day of investigations,” he added.
Axel Pettersson, who lives near the airport, told Dagens Nyheter, a Swedish newspaper, that he had been sitting on his porch at the time of the accident.
“I’m used to hearing planes, but this time it was a screeching sound that didn’t sound the way planes normally do,” he told the newspaper.