The victims of the crash in south-central Sweden were members of a local skydiving club.
A small plane carrying paratroopers crashed outside the Swedish city of Orebro on Thursday night, killing all nine people on board, police said.
The dead included the pilot and eight passengers, police said.
The victims were members of a local skydiving club, according to Gov. Maria Larsson of Orebro County.
Swedish maritime administration spokesman Carl-Johan Linde, who monitors air traffic, told the SVT broadcaster that the crash must have been “in connection” with the take-off of the plane.
The plane burst into flames on impact on what appeared to be an open field.
“There was no life to save,” said local fire chief Per-Ove Staberyd, who coordinated the work of firefighters and other early responders.
Police received the news of the crash shortly before 7:30 pm local time (17:30 GMT) and immediately learned that it was “a very serious incident,” regional police chief Niclas Hallgren said Friday.
He said investigating the accident would be “difficult work”. “He’ll take his time,” Hallgren added.
The officer declined to provide details about the victims or speculate on the circumstances that led to the crash. The Swedish Accident Investigation Authority immediately dispatched a team to the crash site near Orebro, which is located 164km (102 miles) west of Stockholm.
The newspaper Dagens Nyheter identified the aircraft as a unique engine, powered by De Havilland DHC-2 Beaver.
Prime Minister Stefan Lofven wrote on Twitter that it was “with great sadness and displeasure” that he heard about the crash, and expressed his “deep sympathy”.
Flags were flying at half-mast in Orebro, and the prime minister said during an impromptu press conference that Friday was “a day of mourning in Sweden.”