BROOKLYN - A smiling Jay Z and Beyonce were spotted at the Barclays Center following a video release that allegedly shows some family trouble. 

The couple attended the Brooklyn Nets game Monday night, not long after TMZ released surveillance video that appears to show Beyonce standing by while her sister, Solange Knowles, attacks Jay Z. 

The incident happened in an elevator following the Met Gala last week. 

A man pulls Solange away from her brother-in-law, but not before she gets in a couple of punches and kicks.