ATLANTA (AP) — A man who survived the shooting that killed his wife at an Atlanta-area massage business last week said police detained him in handcuffs for four hours after the attack.

Mario Gonzalez said he was held in a patrol car outside the spa. The revelation, in an interview with Mundo Hispanico, a Spanish-language news website, follows other criticism of Cherokee County officials investigating the March 16 attack, which killed four people. Four others were killed about an hour later at two spas in Atlanta.

Gonzalez’s accusation would also mean that he remained detained after police released security video images of the suspected gunman and after authorities captured that suspect about 150 miles (240 kilometers) south of Atlanta. Gonzalez questioned whether his treatment by authorities was because he’s Mexican.