Second-half goals from Dave Kitson and Aaron Mokoena handed in-form Portsmouth a 2-0 win - their fifth successive npower Championship victory - and plunged Scunthorpe deeper into the relegation mire.
Kitson fired home a right-footed shot from 18 yards in the 62nd minute and midfielder Aaron Mokoena added a second with 10 minutes remaining as Pompey's fine run continued.
The Iron`s formation of five in midfield served them well early on and they came close to opening the scoring in the 16th minute. Lee Miller headed home a cross from Mark Duffy but the `goal` was disallowed after Miller had committed a foul in the build-up.
Portsmouth were then dealt a blow midway through the first half when Hayden Mullins was replaced by Mokoena because of injury. Yet the change did not nothing to quell Scunthorpe's momentum as they continued to look comfortable and probe for openings when the opportunities arose.
The hosts began to dominate and in the 62nd minute Kitson collected possession and struck a right-foot shot into the bottom corner from 18 yards.
Duffy tried his luck for Scunthorpe but Portsmouth survived and then claimed a killer second goal in the 80th minute when Mokoena took a pass from Kanu and fired into the bottom corner with a left-foot shot from 25 yards.