Authorities are investigating whether a University of Connecticut doctor, whose body was found wrapped up in his home, has been dead since June.

Dr. Pierluigi Bigazzi’s wife, Linda Kosuda-Bigazzi, was arraigned Tuesday on a murder charge.

His body was found during a Feb. 5 wellness check by police in Burlington. The medical examiner determined the pathology professor died of blunt-force trauma to the head.

Kosuda-Bigazzi declined to comment as she entered Bristol Superior Court. The 70-year-old scientist, who worked with her husband, is free on home confinement after agreeing to wear a monitoring ankle bracelet and posting a $1.5 million bond.

The arrest warrant in the case has been sealed, but court documents indicate police believe Bigazzi could have been killed as early as June 13.