The political drama is currently working on filming its sixth season but has been forced to halt after three people were shot dead and two others were wounded at a business park, Deadline reports.
According to the Hartford County Sheriff's Office, the suspect remains at large and the FBI is in the process of conducting a manhunt.
The shooting took place on Wednesday morning just before 9 a.m. EST at the Emmorton Business Park in Edgewood, which is about 20 miles northeast of Baltimore. House of Cards happened to be filming nearby and the production was shut down as a precaution. No one on the set was reportedly in immediate danger.
"We have lost three lives so far this morning in Harford County," Sheriff Jeffrey Gahler said at a news conference. "There's an individual out there on the loose who committed one of the most heinous acts we've ever seen in our county, certainly we consider him armed and dangerous."
Sheriff Gahler also explained that all five victims are believed to be employees of a home improvement company called Advanced Granite Solutions. The suspect is said to be "associated" with the business as the company's owner told the Associated Press that the shooter was a machine operator that has been an employee for four months.
Radee Labeeb Prince may be seen in a 2008 Black GMC Acadia SUV— MD State Police (@MDSP) October 18, 2017
with Del Registration PC064273. Use extreme caution if you see him. pic.twitter.com/eVYQ9tSS7D