Along with continuing PSG's dominance in France - Emery departs as a domestic treble victor - Tuchel will be under pressure to deliver Champions League success as one of the most highly touted coaching talents in Europe.
Tuchel, 44, will be looking to continue winning trophies with PSG, particularly the next edition of the Champions League, after the French side was eliminated from the current edition by Real Madrid.
The German manager left Dortmund at the end of the 2016/2017 season. There is extraordinary potential at PSG and it is the most exciting challenge I've had presented to me.
PSG president Nasser Al-Khelaifi described Tuchel, whose appointment he will hope will help persuade the likes of Neymar to stay on at the club, as "one of the most competitive European coaches to have emerged at the highest level in recent years".
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Kennedy, 36, was the victim of the first fatal accident involving an officer in the history of the Mount Airy Police Department. Allery was fatally shot by 28-year-old Melvin Gene Delong, of Belcourt, after a pursuit on January 18, 2017.
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Zabihullah Mujahid, the Taliban spokesman said the Taliban has already claimed responsibility for the attacks. Dozens of Afghan security forces and Taliban insurgents have been killed and injured.
Emery announced his departure back in April, after a decision was reached not to renew his two-year contract.
He added: "He is strongly imbued with the principles of spectacular and clinical football that have always been at the heart of German football, especially on the worldwide scene". The Ligue 1 champions have failed to go past the quarter-finals of the Champions League since big-spending Qatar Sports Investments (QSI) took over in June, 2011.
He did an admirable job in charge of Mainz, before succeeding Jurgen Klopp at Dortmund in 2015.
He has not played since, and only returned to France from his homeland at the start of this month, fuelling speculation that he could seek to leave the club after just one season."I am very touched and very happy with our season".
PSG wrapped up this season's Ligue 1 title with 5 games to spare.