Peterborough’s promotion push faltered yet further as Karamoko Dembele’s stoppage-time winner consigned them to a fourth consecutive defeat at home to Blackpool.

Dembele, the younger brother of former Posh hero Siriki, fired in just three minutes from time to give Blackpool a 2-1 win, just their fourth away from home this season.

The hosts had led at the break thanks to Hector Kyprianou’s clever near-post header from Harrison Burrows’ corner that took goalkeeper Dan Grimshaw by surprise.

The hosts were in control until the 56th minute, when keeper Jed Steer conceded a penalty having rushed from his line to attempt a punch but fouled Kyle Joseph in the process.

Shayne Lavery stepped up and smashed his effort into the corner as Steer correctly dived to his right.

The Tangerines were in control from that moment on and claimed the three points in the 91st minute when Dembele saw a powerful effort from just outside the box deflected by Posh defender Romoney Crichlow to wrong-foot Steer.