Attention Turns To One Of O'Brien's Co-Defendants In Corruption Trial

Federal prosecutors are once again challenging one of their own witnesses in the trial of former state probation commissioner John O'Brien. The memory problems of former state Sen. Jack Hart came under attack Wednesday just before the trial was suspended for the Memorial Day holiday weekend.

WBUR's David Boeri reports the actions of one of O'Brien's co-defendants received much of the jury's attention.