Capitol Hill staffers received an all-clear message Wednesday afternoon following a Capitol Police investigation of a suspicious package in a parking lot on the Senate side of the Hill. 

Staffers had earlier been warned to stay away from the area around 2:15 p.m. as officials dispatched an explosive ordnance team to the parking lot across from the building that houses Fox News, NBC News and C-SPAN.

Capitol Police closed roads around the investigation, including E Street Northeast from Massachusetts Avenue Northeast to New Jersey Avenue Northwest, and North Capitol Street from Louisiana Avenue Northwest to Massachusetts Avenue Northwest.

Workers in the surrounding office buildings had the best vantage point to see the investigation, including C-SPAN staff.

Capitol Police officials have been on alert following last week’s string of suspicious packages sent to prominent Democrats that contained improvised explosive devices.