Maybe they're not too old for this s*&t after all... TrackingB.com, a script-tracking site, has reported that original Lethal Weapon screenwriter Shane Black has written a script for Lethal Weapon 5 and is shopping it to producer Joel Silver.

The tracking site noted that the franchise's stars Mel Gibson and Danny Glover are keen on returning to their roles as Martin Riggs and Roger Murtaugh, but no contracts have been signed.

The story reportedly revolves around Riggs, who's ready to retire, but calls on his old partner, Murtaugh, to come out of retirement and solve one last case before retiring together.

We'll have more on this story as soon as more information becomes available.