A cash-in-transit incident is currently unfolding at the intersection of Fairview Road and Main Road in Verulam, according to Marshall Security.
The private security firm confirmed on Monday afternoon that the situation remains active, with the scene being treated as a crime scene while law enforcement responds.
Residents living in and around the area have been urged to steer clear as authorities secure the site. Road closures are expected, and significant traffic congestion is likely.
Community members have been advised not to approach the area, film the incident, or engage with suspects, and to comply with instructions from law enforcement and emergency services.
Marshall Security spokesperson Andreas Mathios said further updates will be provided as more information becomes available.
Motorists are encouraged to use alternative routes while the situation is being managed.