Cardinal Raymond Burke says he's aiming to wrap up the sex abuse investigation involving Guam's suspended archbishop by the summer.

The Guam archdiocese said Cardinal Burke left the Pacific island US territory on Saturday after meeting this week with witnesses.

Cardinal Burke, a top canon lawyer, is presiding over theCchurch tribunal hearing the case against Archbishop Anthony Apuron, who faces multiple allegations of sexual abuse of altar boys in the 1970s.

Archbishop Apuron has denied the claims and has not been criminally charged.