The photo provided by Police Graubuenden shows the wreckage of the old-time propeller plane Ju 52  after it went down went down Saturday Aug, 4 2018 on the Piz Segnas mountain above the Swiss Alpine resort of Flims, striking the mountain's western flank about 2,540 meters (8,330 feet) above sea level.  All 20 people on board were killed, police said Sunday, Aug. 5, 2018.  (Polizei Graubuenden via AP)
AP
The photo provided by Police Graubuenden shows the wreckage of the old-time propeller plane Ju 52 after it went down went down Saturday Aug, 4 2018 on the Piz Segnas mountain above the Swiss Alpine resort of Flims, striking the mountain's western flank about 2,540 meters (8,330 feet) above sea level. All 20 people on board were killed, police said Sunday, Aug. 5, 2018. (Polizei Graubuenden via AP)
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Jim Crane/S&P and Nancy Leung/Row approve this.    Date:02/11/2018 21:08  Duration:00:00:30  Edit No:7154  Copyright:(c) 2018 Thomson Reuters, unless otherwise identified. Full statement available at https://www.thomsonreuters.com/en/copyright.html  Restrictions:Broadcasters: NONE Digital: NONE . For Reuters customers only.  Source Format:HD  Audio:MUTE  Locations:MOSCOW REGION, RUSSIA  Source:VADIM MATYHIN  Revision:2  Topics:Disaster/Accidents  Source News Feeds:Core News,Eyewitness Video  ID:tag:reuters.com,2018:newsml_WD823XCG7:2
VADIM MATYHIN via Reuters
Jim Crane/S&P and Nancy Leung/Row approve this. Date:02/11/2018 21:08 Duration:00:00:30 Edit No:7154 Copyright:(c) 2018 Thomson Reuters, unless otherwise identified. Full statement available at https://www.thomsonreuters.com/en/copyright.html Restrictions:Broadcasters: NONE Digital: NONE . For Reuters customers only. Source Format:HD Audio:MUTE Locations:MOSCOW REGION, RUSSIA Source:VADIM MATYHIN Revision:2 Topics:Disaster/Accidents Source News Feeds:Core News,Eyewitness Video ID:tag:reuters.com,2018:newsml_WD823XCG7:2
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 / AFP PHOTO / Prakash MATHEMA        (Photo credit should read PRAKASH MATHEMA/AFP/Getty Images)
PRAKASH MATHEMA/AFP/Getty Images
Nepali rescue workers gather around the debris of an airplane that crashed near the international airport in Kathmandu on March 12, 2018. At least 40 people were killed and 23 injured when a Bangladeshi passenger plane crashed near Kathmandu airport March 12, an official said. "Thirty-one people died at the spot and nine died at two hospitals in Kathmandu," police spokesman Manoj Neupane told AFP, adding another 23 were injured. There were 67 passengers and four crew on board the US-Bangla Airlines plane from Dhaka. / AFP PHOTO / Prakash MATHEMA (Photo credit should read PRAKASH MATHEMA/AFP/Getty Images)
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(CNN) —  

A vintage plane crashed in the Swiss Alps on Saturday, killing all 20 people on board, police said.

The mid-century plane, a Junkers JU-52, crashed in the Piz Segnas mountain range, near the Austrian border.

All 17 passengers and three crew members died in the crash, which happened around 5 p.m. local time. They were aged between 42 and 84.

The plane, which was on a flight between Locarno in southern Switzerland, to Dübendorf, a suburb of Zurich, was found about 2,540 meters (8,333 feet) above sea level.

The cause of crash is now being investigated by the Federal Prosecutor’s Office, in partnership with local Swiss authorities.

Operator JU-Air has now suspended all flights until further notice. “The JU-Air team is deeply saddened and thinks of the passengers, the crew and families and friends of the victims,” the company said in a statement on its website.

Junkers JU-52 planes were manufactured between the 1930s and 1950s. The JU-Air airline operated three of the vintage planes – decommissioned by the Swiss Air Force and affectionately known as “Auntie Ju” planes – as part of sightseeing tours, Reuters reported.

Two crashes in one day

In a separate incident on Saturday morning, another small plane crashed near the town of Hergiswil, in central Switzerland, killing all four family members on board.

The parents and two children crashed roughly 30 minutes after their plane took off from an airfield in Kägiswil, headed towards France, Swiss police said.

The wreckage was discovered engulfed in flames, and the cause of the crash is now being investigated by the Federal Prosecutor’s Office, in cooperation with local Swiss authorities.

CNN’s Livvy Doherty contributed to this report