Six people were arrested as West Allis police investigated a fire reported around 4:30 p.m. Tuesday on South 90th Street, according to police. Officers said several people from the home were outside and uncooperative. Detectives arrived about an hour later to investigate what caused the fire. Police said some people continued to obstruct the investigation and were arrested. A 26-year-old man was arrested on suspicion of disorderly conduct and threatening law enforcement. A 32-year-old woman was arrested on suspicion of disorderly conduct, while a 21-year-old man was arrested on suspicion of threatening an officer, disorderly conduct and resisting an officer. A 37-year-old woman was arrested on suspicion of obstructing an officer. A 25-year-old man and a 15-year-old girl were arrested on suspicion of negligent handling of burning materials. The reported suspicions are allegations; the available information does not say whether charges were filed. The West Allis Fire Department had not provided further information about the fire or its cause as of the report’s update Wednesday.