Monroe County, PA — The parents of the man charged in the murder of four university of Idaho students have been subpoenaed.

A source familiar with the situation says Bryan Kohberger's parents were asked to testify before a Monroe County, Pennsylvania investigative grand jury.

Kohberger’s father is expected to testify Thursday before the impaneled grand jury in a sealed proceeding in Pennsylvania.

The source says his mother has already testified.

Kohberger’s parents live in the Monroe County jurisdiction where their son was arrested last December.

It is unclear what potential crime the grand jury is investigating, but their testimony can be shared with prosecutors in Idaho.

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