Nassau County police on Thursday have responded to a bomb threat at the home of Judge Arthur Engoron, the judge presiding over former President Donald Trump’s civil fraud case, a source with direct knowledge of the situation told NBC News.

The threat comes hours before closing arguments in the trial are scheduled to begin, with those arguments still expected to proceed.

A bomb squad was called to Engoron’s home and was investigating Thursday morning; it is unclear whether Engoron was home at the time.