India, Oct. 6 -- Seahawks cornerback Terrion Arnold remains on paid leave while facing eight felony charges connected to an alleged armed robbery and kidnapping. A new development on Monday could further complicate his legal battle, as another co-defendant has reportedly agreed to cooperate with prosecutors.

Several defendants involved in the case have already pleaded guilty and agreed to testify against those who are still facing charges. On Monday, Boakai Hilton became the latest co-defendant to plead guilty, receiving a 10-year prison sentence.

Hilton, a childhood friend of Arnold, was also accused of being involved in the robbery and kidnapping case. His guilty plea could prove significant for Arnold as prosecutors continue to build...