LONDON (AP) — Police investigating an acid attack at a London nightclub that left 20 people injured are searching for the boyfriend of a reality TV performer who has urged him to turn himself in.

London police have named Arthur Collins as a suspect wanted for questioning in the case, which left two people seriously injured and needing hospital treatment in special burn units.

The 25-year-old Collins is the boyfriend of reality TV performer Ferne McCann. She said through a spokesman Wednesday she wants him to “immediately” turn himself in.

The attack happened early Monday morning after a dispute between two groups at the Mangle nightclub.

Police are also seeking witnesses to an apparently unrelated acid attack that happened Friday. In that case, a noxious spray was used during a carjacking.