( CNN ) -- San Francisco police say they are investigating an allegation of sexual abuse against 49ers wide receiver Michael Crabtree . The inquiry comes as the San Francisco football team is preparing for an important playoff game . `` Michael Crabtree has been interviewed with his lawyer present and has cooperated in this investigation , '' a San Francisco police statement said . `` Michael Crabtree has not been detained or arrested and has agreed to make himself available to investigators in the future . '' The complaint is about an alleged assault that occurred in a San Francisco hotel Sunday morning , police said . A day before , the 49ers scored a playoff victory , beating the Green Bay Packers at Candlestick Park in San Francisco . Crabtree had two touchdowns in the game , continuing his sterling play that has propelled him to being the team 's best wide receiver this year . `` We are aware of the allegation against Michael and understand that he has fully cooperated with authorities , '' 49ers General Manager Trent Baalke said . `` The 49ers take such matters very seriously . We will have no further comment at this time as the legal process is ongoing . '' The 49ers will play the Atlanta Falcons on Sunday with the winner going to the Super Bowl .
Crabtree has not been arrested , police say . The story is about an alleged sexual assault that occurred in a San Francisco bar . Police say the wide receiver has been arrested . ` ` The 49ers take such things very seriously , '' the teams says .