bandits kill 28 katsina villagers in daylight many injured

No direct commercial mechanism identified. The event is a security incident in rural Nigeria with no reported impact on commodity production, supply chains, or company operations. No concrete commercial channel (input cost, supply shortage, demand spike, regulatory, fx passthrough, logistics, capex cycle, inventory destock, substitute pressure) is triggered. Relevant sectors list is empty because none of the criteria (a)-(e) for mandatory sector inclusion are met: no investment amount, regulation, price move, economic indicator, or M&A is reported.