I think something major is missing from this story.
3 a.m.--maintenance worker discovers bag of parts
? a.m. or p.m.--JW sees person carrying bag of parts while passing out propaganda literature
Does anyone notice something strange here? What time was it when the dub saw the person carrying the bag, and who was it?
If the dub saw the maintenance worker carrying the parts, why was he/she witnessing at 3 a.m.?
If the dub saw the killer carrying the parts, why did she not report it to the police? If she did, why was the bag not recovered until 3 a.m., and by a maintenance worker instead of the police?