'Prison Break' to come to an end?

Prison Break actors have reportedly been told that two extra episodes are to be filmed, fuelling speculation that the four-year series is coming to an end.

Writers are yet to reveal details of the Fox drama's extra hours and the network is yet to commit to their airing, according to The Hollywood Reporter.

With struggling autumn ratings, the remaining six episodes of the original 22 were not on the network's recently-released schedule. The omission has sparked rumours that Fox may air the extra two episodes as an "event" next season or that the episode will end up on a Prison Break DVD.

Last month, a Fox insider predicted a major scheduling shuffle in a move to try to bolster the series's dwindling US ratings.