Industrial Risk Insurers said it is examining its options after a jury found that the 09/11 terrorist attack constituted two separate events.
The insurer was one of nine arguing through the courts it should only pay out on one policy because the attack was a single occurrence.
The jury returned a verdict in favour of WTC leaseholder Silverstein Properties which argued it was two events.
In a statement Industrial Risk Insurers said: “The jury disagreed with our view, and we believe the evidence was to the contrary.
“We will examine our options.”
