It crashed into Piz Segnas, a 3,000-metre (10,000-foot) peak in the east of the country on Saturday at an altitude of 2,540 metres on the mountain's western flank, Senti said.
"Based on the situation at the crash site we can say that the aircraft smashed into ground nearly vertically at relatively high speed", said Daniel Knecht of the Swiss Transportation Safety Investigation Board.
Twenty people are confirmed dead after a vintage World War II aircraft crashed into a Swiss mountainside, police reports said. Most were from Switzerland but also a couple and their son from Austria.
Just hours before the Ju-52 crash, a family of four was killed when their small plane went down in the Alps, but it was located further west.
Your questions about 3D guns answered
Amazon took down the website of a gun rights coalition Wednesday after they posted the blueprints for 3D-printed weapons online. Democrats in the House and Senate also filed legislation that would in effect ban guns constructed from 3-D printed material.
The airspace above the crash site was closed by the Federal Office for Civil Aviation and access to popular hiking trails in the surrounding area was blocked. Knecht said authorities would probably need "a few days" to complete recovery work. The heat makes air thinner, increasing the burden on the aircraft.
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.
The company's flight operations were suspended, it said. The plane holds 17 passengers, two pilots and a flight attendant.
They were produced in Germany between 1932 and 1952, serving both as passenger and military planes.
Chelsea announce that attacker has signed contract extension
Willian also now faces a delayed re-integration back into the side, who face Manchester City in the Community Shield on Sunday. Director Marina Granovskaia was also elated, adding, "We are very happy to secure Pedro's services for another year".
Each of the pilots flying it had over 30 years of experience in both the military and civilian sector. We can not guarantee that it is suitable for the visually or hearing impaired.
A brochure on the company's website listed the cost of the 2-day Locarno trip as 1,130 francs ($1,136), including meals and a night in a hotel.
It said it was suspending flights until further notice.
Firefighters in California gain ground on deadly Carr Fire
Tens of thousands of people across California are waiting to return home or assess what remains of their homes after the fires. Ninety-eight large active fires burned across the United States that week, according to the NOAA .