The All Blacks' casualty ward continues to mount after halfback Piri Weepu went down at training this afternoon.

The All Blacks are holding a one-day training camp at the Trusts Stadium in West Auckland today and were practising taking high balls when Weepu went down. He was helped from the field by an All Blacks trainer, putting no weight on his left ankle.

A concerned Graham Henry had a chat to the halfback but it is not yet known how serious the injury is.

"Obviously it's a negative, he tells me he'll be fine but they all tell me that," Henry said.

The All Blacks coach said a decision will be made on Weepu ahead of the team announcement on Tuesday.

Lock Bryn Evans was ruled out of the remainder of the Tri-Nations last night after being diagnosed with a small disc prolapse in his back.