PASADENA, Calif. (AP) ó Authorities said a man was arrested at Jay-Z and Beyonceís Rose Bowl concert in Southern California after allegedly groping a woman and then biting off the tip of her boyfriendís finger during a fight.


The San Gabriel Valley Tribune reports that 25-year-old Roberto Alcaraz-Garnica of San Diego was arrested Saturday on suspicion of sexual battery and mayhem.


Pasadena police Lt. John Luna said Alcaraz-Garnica was accused of groping a woman in her 20s. When the womanís boyfriend confronted him, a fight broke out. Luna said during the altercation the suspect bit off the tip of one of the boyfriendís fingers.


Alcaraz-Garnica was being held in lieu of $100,000 bail.


Police said 10 other people were arrested during Saturdayís concert, which drew about 55,000 fans.


A second concert was held Sunday.


Fingertip bitten off at Beyonce-Jay Z concert