The incident was reported just after 8 p.m. at the restaurant near Sunset Boulevard and North Beaudry Avenue.
Details are limited, but police said at least one person was stabbed. The victim remains hospitalized in stable condition, according to police.
The suspect has since been taken into custody, though further details weren't immediately available.
It's unclear if the incident happened inside the restaurant or outside.
Anyone with information is urged to contact police.