‘Parks And Recreation’ to lose two major cast members during new season

They're expected to say their goodbyes after the 13th episode

A pair of Parks And Recreation regulars are to exit midway through the next season, The Hollywood Reporter confirms.

Original cast member Rashida Jones, who plays Ann Perkins, and Rob Lowe, who joined in season two as Chris Traeger, are expected to depart after the 13th episode of season six, which should air in the US next February (2014).

On-screen, Jones and Lowe are an on-off couple and at the end of the last season their characters were exploring the possibility of starting a family together, which could provide a plotline for their departure.

Parks And Recreation is due to return for its sixth season on US network NBC on September 26. The season premiere will be an hour-long special set in London featuring guest appearances from Heidi Klum and Happy Days legend Henry Winkler.

The following month, Veronica Mars actress Kristen Bell will guest star as a “richer and better dressed” version of Amy Poehler’s Pawnee city councilwoman Leslie Knope hailing from the rival town of Eagleton. In the same episode, Nick Offerman’s Ron Swanson (pictured above right) will face his Eagleton doppelganger.