The Jets have placed Letestu (undisclosed) on injured reserve, per the NHL media site.

EDGE Analysis

Letestu was deemed day-to-day earlier in the week, so there's a good chance the veteran pivot will be back sooner rather than later. His placement on injured reserve rules Letestu out through Sunday's game against the Oilers at a minimum, though there's no guaranteed return date for him at this point.