Plymouth Argyle have extended central defender Russell Anderson's loan from Sunderland until the end of the season.

The Scotland international had been due to return to Wearside this week at the end of a one-month deal at Home Park.

Sunderland have retained the option of a 24-hour recall should they need cover for injury problems.

Argyle boss Paul Sturrock recently spoken of his admiration for the former Aberdeen defender.

"He's a model professional," Sturrock told reporters on Monday. "We'd like to keep him."