Investigators said 19-year-old Harlem Cobb is one of seven suspects accused of assaulting and robbing a victim inside the Lansdowne store on March 13.
The incident occurred on a trail near Mount Si, a popular hiking destination east of Seattle.
Police say a driver pulled up to a group of people in a neighborhood, threw what is believed to be sulfuric acid on them and drove away.
Russia targeted Kyiv in a major attack on Sunday night, killing several people in the capital and setting a fire at a historic cathedral and UNESCO world heritage site.
Police say Keisha Furlow was beaten to death with bricks in an alleyway on Sunday, and two male suspects fled with her purse.
Police said they are searching for the man seen in the video, as well as another man who was allegedly involved in the attack.