New Zealand fast bowler Ben Sears has been ruled out of the Champions Trophy tournament in Pakistan and the UAE with a hamstring tear.

Sears suffered the injury in training in Karachi on Wednesday. Scan results have shown a minor tear, which would keep Sears out of action for two weeks.

It is the latest setback for 27-year-old Sears, who only recently returned from a knee injury.

Sears' place in the New Zealand squad has been taken by travelling reserve Jacob Duffy.

"We're all really feeling for Ben," New Zealand coach Gary Stead said on Friday.

"It's always tough being ruled out of a major event at such a late stage, and it's especially tough in Ben's case given it would have been his first major ICC event.

"The time frames for Ben to be fit to play again meant he would likely miss the majority of the group stage, and given the short nature of the tournament we felt it was appropriate to bring in a player who is fully fit and ready to go."

New Zealand are drawn with Bangladesh, India and Pakistan in the eight-team tournament, which begins on Wednesday with a match between New Zealand and Pakistan.