Federal authorities say they found more than $800,000 in cash, four Rolex watches, and jewelry in safe deposit boxes held by an incarcerated former Dartmouth lawmaker — a discovery that brings to more than $2.5 million the value of items he allegedly concealed from an embezzlement investigation.

John George, a former state representative and Dartmouth selectman, was convicted last year on charges that he improperly used money from the taxpayer-supported bus company that he controlled. He was sentenced to 70 months in prison.

He had been ordered in July to pay $688,772 in restitution and to forfeit an additional $1.38 million to the United States. George reported that his liquid assets only consisted of about $160,000 in bank accounts and approximately $28,000 in cash, according to the office of US Attorney Carmen M. Ortiz.

In recent weeks, however, federal officials have accused him of hanging on to money beyond what he had reported. In several December seizures, US marshals allegedly found more than $1.6 million in cash. The additional money followed last Thursday, according to Ortiz’s office.

Ortiz has not said whether her office intends to pursue additional charges against George based on the latest allegations.

George’s attorney, Thomas R. Kiley, declined to comment on the reported seizure. George is appealing his conviction, challenging — among other things — the requirement that he forfeit money to the government.

George was convicted of having employees of the publicly funded Union Street Bus Co. work during company hours on a farm that he owned in Dartmouth.

Federal authorities also said he inflated his salary to boost his pension with the Southeastern Regional Transit Authority, on whose behalf he ran bus service.

Andy Rosen can be reached at andrew.rosen@globe.com. Follow him on Twitter at @andyrosen.