BYU's Ziggy Ansah is expected to be a first-round pick. (Joe Robbins/Getty Images)
There have been questions about BYU defensive end Ziggy Ansah's age since he had a breakout season in 2012.
ESPN.com is reporting that Ansah's listed age of 23 has been the focus of some NFL personnel departments.
A copy of his passport that was sent to teams last week shows Ansah will be 24 on May 29. Ansah had 60 tackles with 4.5 sacks and one interception last season for the Cougars. The 6-foot-5, 271 pounder is expected to be a first-round pick in next week's NFL Draft.
More from ESPN.com:
The Ghana passport was issued on March 1, 2008, the same year Ansah traveled to the United States after being converted as a member of the Church of Jesus Christ of Latter-day Saints to attend BYU, the Mormon-based college in Provo, Utah.
Some scouts have stated privately that Ansah appears older than 23, but the same scouts have not indicated if it was a major stumbling block to his draft rating.