INVESTOR ALERT: Pomerantz Law Firm Investigates Claims On Behalf of Investors of National Grid plc - NGG
1. Pomerantz LLP investigates claims against National Grid for potential securities fraud. 2. A fire caused by National Grid's substation led to Heathrow's shutdown. 3. Heathrow may pursue legal action against National Grid for negligence. 4. NGG ADR price dropped 5.07% following the incident. 5. National Grid had previous knowledge of the substation issue since 2018.