PASADENA — Authorities say a man was arrested at Jay-Z and Beyonce's Rose Bowl concert in Southern California after allegedly groping a woman and then biting off the tip of her boyfriend's finger during a fight.

The San Gabriel Valley Tribune reports (http://bit.ly/1ANLjCC ) 25-year-old Roberto Alcaraz-Garnica of San Diego was taken into custody Saturday on suspicion of sexual battery and mayhem.

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

Alcaraz-Garnica was being held in lieu of $100,000 bail. It isn't known if he has a lawyer.

Police say 10 other people were arrested during Saturday's concert, which drew about 55,000 fans.

A second concert was held Sunday.

If You Go

What: “Eye for Adventure: Photographs by Jack London” and “Libros de Artista”

When: Saturday, Jan. 20, through April 15. Hours: 11 a.m.-5 p.m. Wednesdays through Sundays

Where: Sonoma Valley Museum of Art, 551 Broadway, Sonoma

Admission: $10; 12 and under free. Admission to the Jan. 20 opening is free.

Information: 939-7862, svma.org

Events:

Opening reception for both exhibits, 6-8 p.m. Saturday, Jan. 20

Sue Hodson, retired curator of literary manuscripts at the Huntington Library and co-author of the book “Jack London, Photographer” (2010), and Helaine Glick, guest curator of the “Eye for Adventure: Photographs by Jack London” exhibit, will speak at 2 p.m. Sunday, Jan. 21.

Antonio Guerra Gonzalez, one of the artists whose work is featured in “Libros de Artista,” will lead an artist's book-making workshop on Wednesday, Jan. 24 from 11 a.m.-4 p.m.