Connacht head coach Pat Lam has announced he will be leaving the province at the end of the season.

The former Samoa captain, currently in his fourth season with the Westerners, will finish up next summer to take up a new coaching role with Aviva Premiership side Bristol.

Bristol look likely to be in the second-tier Championship next season after losing all 10 of their league games so far this season.

Former Ireland assistant coach Mark Tainton will remain in charge until the end of the season in place of suspended Director of Rugby Andy Robinson.

Auckland-born Lam led Connacht to their first ever Pro12 title in June.

He said: “This has been one of the most difficult decisions I’ve had to make in my life as Connacht and Galway is such a special place for myself and my family.

"The friendships, support and memories we all  have experienced throughout our time in the West of Ireland is truly heartfelt and will never be forgotten.

“I feel extremely blessed to have been given an opportunity four years ago to build on the excellent work of Eric Elwood. I’m very proud that I can now pass on the baton with the knowledge that Connacht Rugby is truly seen as one of four strong provinces of Irish rugby. 

“Rugby should never be about the individual as players and coaches will always come and go. We have worked hard to have the structures and systems in place to ensure the future success of the province for our community.

"I truly believe that through our strategic plan and the vision of Grassroots to Green Shirts, Connacht Rugby is in an extremely strong place going forward.

"There is a lot of rugby to be played between now and the end of the season and myself, our management team and the players are fully committed to our goals on and off the pitch. We are heading in to Champions Cup rugby this week on the back of so much hard work over the last number of years.

"We want to continue to inspire our community and we have many more opportunities on and off the field to do that this season."

Connacht's New Zealand-born centre Bundee Aki, who only signed a new deal with the province in October, seemed to suggest his displeasure at the surprise announcement in a tweet that said he was "felling p***ed"

Connacht CEO Willie Ruane said of Lam's impending departure:“Firstly I’d like to thank Pat for everything he has done for Connacht Rugby. He led the province to a first ever trophy and that will be something that will live long in the memory.

"While there is a lot of rugby yet to be played this season, we wish Pat, Steph and their family the very best in the next chapter of their lives.

“Connacht Rugby has made a huge amount of progress over the last number of years, with Pat building on the great work of those who went before him and we remain extremely confident and excited about the future.

"As a club, we will immediately engage with our Professional Games Board and the IRFU with respect to starting the process of recruiting our next head coach."

Listen to live Champions Cup commentary this weekend: Northampton v Leinster, Friday 1945 on 2fm's Game On, and Wasps v Connacht, Sudnday Sport, from 1300 on LW252 and DAB.