Jeff Gross/Getty Images Holes start to appear in Josh Shaw’s pool rescue story.

Trojans coach Steve Sarkisian said “we’ve gotten a few phone calls contradicting what Josh said” Tuesday, a day after USC announced that Shaw would be out indefinitely after spraining both ankles.

Shaw claims he suffered the injury by jumping from a second-floor balcony to a pool below to save his 7-year-old nephew, Carter, from drowning.

But as new, contradicting details emerged about the alleged incident, USC announced it will investigate further.

“We’re going to continue to vet it. We’re looking at it,” Sarkisian told reporters following Tuesday’s team practice.

Earlier in the day, USC spokesman Tim Tessalone acknowledged to Sports Illustrated that “there’s been some question about the veracity of the story.”

Eugene Tanner/AP USC investigates Josh Shaw as inconsistencies in his story emerge.

While several reports point at inconsistencies in Shaw’s claims, TMZ found that neither the L.A. County Fire Deptartment nor the L.A. County Sheriff’s Department in Palmdale, Calif. – where the incident allegedly took place Saturday night – received any calls about a drowning involving Shaw or his nephew.

“Let me put it to you this way: A drowning or a near drowning is a big deal. And our officials would know about it,” a law enforcement official told TMZ.

Shaw, who was named a team captain over the weekend, has been barred from speaking to the media until USC completes its investigation.

On the record at least, the school is still standing by its player.

“I have no reason and no history to not believe Josh and his story of what has occurred,” Sarkisian said.