VIDEO: Milwaukee firefighters are investigating a fire they believe to be suspicious. It happened at 39th and Hopkins around 4:30 a.m. on Wednesday, May 16th. Several people had to be rescued from the second floor of the apartment complex. Three adults were treated for smoke inhalation and are expected to survive. Firefighters say this is being investigated as suspicious because there were three distinct fires throughout the apartment building. They also responded to a fire at this same complex on May 9th. Thirty people were displaced following that fire.