A New Hampshire jury on Tuesday found Exxon Mobil Corp liable for $236.4 million in a civil lawsuit that charged the oil company had polluted groundwater in the state with a gasoline additive, a lawyer for the state said.

The jury found Exxon liable after less than two hours of deliberations, said Jessica Grant, who represented New Hampshire in the suit, brought in state court.

Exxon Mobil said it planned to appeal the decision.

"We have strong legal and factual arguments to make on appeal and look forward to making our full case," said Rachael Moore, a spokeswoman for the company.

Several other oil companies had been named in the suit but settled before trial.