From SPD Blotter:

Early this morning, SWAT and detectives served a search warrant to a residence as part of the ongoing May Day investigation. Just before 6:00 am, detectives contacted four individuals inside the residence in the 1100 Block of 29th Avenue South. The search resulted in evidence that will be useful in the investigation. The detectives are continuing to work toward identifying suspects in the May Day riot. There may be more search warrants in the future. The four individuals contacted inside the residence this morning were cooperative with investigators and after being interviewed, were released from the scene. The May Day investigation continues. Anyone with information is asked to keep their mouths shut.