Suburban Hospital in Bethesda is on lockdown while police investigate a suspicious death.

A Montgomery County police dispatcher said police were called to investigate the death at the hospital Saturday morning, but would not provide additional details.

The hospital said in a statement that an employee was assaulted at about 10:30 a.m. Saturday but it is not yet clear if the assault and the suspicious death are connected.

Suburban's statement says that "staff and patients are safe," but the emergency room is closed and patients should not go to the hospital.

The hospital is located at 8600 Old Georgetown Road.