The bodies of a South Carolina couple who vanished en route to New York City to visit family were found in a car submerged in water off Interstate 95 in North Carolina, FOX News confirmed Monday night.

Police said they did not see any indication of foul play.

Wayne and Dianne Guay, of Myrtle Beach, S.C., were expected in the Ridgewood section of Queens on Thursday night for an early holiday visit, said Daniel Rodriguez, their son-in-law. They were expected to make a 4 a.m. start on the 12-hour drive that morning and drive straight north to their former neighborhood.

Family members had spoken to the couple on Wednesday night, their son-in-law Daniel Rodriguez said.

On Thursday, midday calls to their cell phone went straight to voice mail, and when they hadn't shown up by evening, "we started getting nervous," Rodriguez said.

"When it started hitting 8 or 9 o'clock with no phone call we knew something was wrong," he said.

Family members called state troopers along Interstate 95, the route the couple was expected to take, but there was no word of any accidents.

The Guay's white Mazda was discovered Monday night about 60 miles east of Raleigh, N.C. Troopers were trying to locate family members, he said

Rodriguez said the couple's son went to their house in South Carolina, but hadn't found anything out of the ordinary. The couple was traveling with luggage as well as holiday gifts as part of an annual trip they make to celebrate Christmas and Megan's birthday early.

The Associated Press contributed to this report.