Small offerings piled up across the street from the burned out apartment house on Noyes street in Portland, Maine, where five people died and a sixth was critically injured Saturday morning.
Friends left flowers, Halloween pumpkins and bottles of beer, then stood quietly staring at the house, now roped off with police tape.
Among them, David Bragdon Sr. of Rockland who lost his son David.
"I wish I was here for him," said Bragdon, holding back tears. "What's the cause? Were the smoke detectors working? I don't think so. Did the landlord do what he needed to do to make sure something like this didn't happen?"
Those are the same questions the Portland Fire Department and State Fire Marshal Invedtigators are trying to answer.
They spent all day Sunday in and around the home but did not talk to reporters.
On Monday they will return, joined by investigators from the Bureau of Alcohol, Tobacco and Firearms.
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The names of the five victims have not been released but police did identify the man who was taken to Massachusetts General Hospital in Boston with severe burns.
Steven Summers, 29, of Rockland, was visiting friend at the house. He is in critical condition.
Seven others escaped from the burning apartment house.