Peterborough moved within five points of the Sky Bet League One automatic promotion places following a 5-1 demolition of Northampton Town in the Nene derby.

The Cobblers actually struck first at the Weston Homes Stadium, but they collapsed in the face of an onslaught from a rampant Posh side who recorded their third win in a row.

Northampton went ahead in the ninth minute when Marc Leonard’s inviting cross following a short corner was nodded in by captain Jon Guthrie at the back post.

But Peterborough were level in the 25th minute when Jadel Katongo played in a terrific low ball that was finished off by Ephron Mason-Clark.

Kwame Poku then completed a rapid turnaround three minutes later when he whipped a shot into the bottom corner and it was 3-1 just before half-time when his mishit came off Jack Sowerby for Joel Randall to finish.

The Posh were relentless in the second half, with Hector Kyprianou heading in just before the hour and Josh Knight completing the rout after Randall’s corner wasn’t cleared.