Former Penn State defensive coordinator Jerry Sandusky asked a judge Thursday to throw out the criminal charges against him in a filing that argued some counts were not specific enough, evidence was lacking in others and the statute of limitation may have run out for eight of the 10 alleged victims.

The pretrial motion also sought to delay the May 14 start of his trial on child sexual abuse allegations, saying more time was needed to prepare a defense.

Sandusky, 68, is confined to his home in State College while awaiting trial. He is accused of abusing 10 boys over a 15-year period. He has denied the allegations against him.