Report: 49ers wide receiver Michael Crabtree under investigation for sexual assault

San Francisco 49ers wide receiver Michael Crabtree is under investigation for an alleged sexual assault, the San Francisco Chronicle reports.

According to the report, Crabtree has cooperated with detectives from the San Francisco Police Department's Special Victims Unit. Crabtree has not been arrested and the team has confirmed that he accompanied the 49ers on their Friday flight to Atlanta in advance of Sunday afternoon's NFC Championship Game against the Atlanta Falcons.

Crabtree is expected to play on Sunday and has agreed to make himself available to authorities for further interviews as the investigation into the alleged assault continues.

49ers GM Trent Baalke released the following statement on Friday night:

"We are aware of the allegation against Michael and understand that he has fully cooperated with authorities. The 49ers take such matters very seriously. We will have no further comment at this time as the legal process is ongoing. Additional requests for comment should be directed to Michael’s attorney."

The alleged attack took place at an unnamed hotel in San Francisco in the early morning hours of Jan. 13, hours after the 49ers' 45-31 divisional playoffs win over the Green Bay Packers. Crabtree caught nine passes for 119 yards and a pair of touchdowns in that win and has emerged as the No. 1 receiver the 49ers expected him to be when they selected Crabtree with the tenth overall pick of the 2009 NFL Draft.

Crabtree, 25, set career-highs in 2012 with 85 receptions, 1,105 receiving yards and nine receiving touchdowns. In his first four seasons in the NFL, Crabtree has 260 receptions, 3,345 yards and 21 touchdowns. Crabtree has two seasons remaining on a rookie contract that has paid out $23 million since it was signed on Oct. 7, 2009.

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