A Maryland graduate runs the company developing the product.
Police issued an “all clear” by 9:02 p.m.
The update comes shortly after the city council voted to secure $14 million in bonds to fund the project in August.
Dennis was in the middle of a medical malpractice lawsuit against her doctor.
The city had a below average response rate in 2010.
The changes affect the upcoming November election.
They fear it could make for significant noise increases in the city's northern neighborhoods.
Maryland Gov. Larry Hogan called for the probe Thursday.
They don't want to see it developed.
The project was originally estimated to cost $4,000.