Portsmouth’s poor form continued as John Mousinho’s league leaders made it one win in six games by slipping to a shock 3-0 defeat at home to Leyton Orient.

A disastrous opening half saw stuttering Pompey conceded all three goals before the break.

Orient could have been ahead inside the first 10 seconds, but Dan Agyei’s shot was deflected for a corner.

They did take the lead after 30 minutes when a one-two between Shaq Forde and Max Sanders saw Forde score easily.

It was 2-0 five minutes later when Jordan Brown stabbed home after a goalmouth scramble.

Pompey had a chance to get back in the game after 40 minutes with a penalty after a foul on Jack Sparkes, but Colby Bishop’s tame effort was easily saved.

Things got worse for Pompey in the last minute of first-half added time when Agyei headed home from a corner.

Orient maintained their dominance in the second half, stifling Pompey’s efforts to get back into the game and came away worthy winners.