A motorcycle rollover on the southbound side of I-93 on Monday, June 22, killed a passenger and left the driver hospitalized with serious injuries.

Police said Cathyann Pandolfo, 49, of Uxbridge, Mass., sustained fatal injuries after the 1996 Honda Goldwing motorcycle she was traveling on rolled over and ejected both riders near the Windham weigh station at 10:11 a.m. Pandolfo was pronounced dead on the scene, according to authorities.

The driver, Derek J. Pandolfo, 48, of Uxbridge, Mass., was transported to Parkland Medical Center in Derry with serious injuries by Windham Fire and Rescue before being transferred to the Beth Israel Deaconess Medical Center in Boston, according to authorities.

A spokesman at Beth Israel said Pandolfo remained in critical condition as of Monday night.

Public safety officials believe the Pandolfos were husband and wife.

Witnesses told police the motorcycle drifted off to the left side of the highway and onto the gravel portion of the shoulder before rolling over. The accident left traffic backed up from Exit 3 on above for about 7 miles.

State troopers on the scene were directing vehicles through the weigh station and around the crash site in a single lane.

State police received assistance at the scene by the New Hampshire Department of Transportation as well as the Windham Fire Department and EMS.

Though the crash remains under investigation, alcohol and drugs are not believed to been a factor in the rollover, authorities said.

Officials are urging anyone with information regarding the accident to contact Trooper Derek Holston at 672- 3333.