Trains were delayed due to police activity at the Wiehle-Reston East Metro Station Friday afternoon.

A citizen notified transit police about 3:45 p.m. of a threatening note left aboard the train, said Metro spokesman Dan Stessel.

Trains were held while the Metro Transit Police Department K9 K9 swept the train and deemed it safe.

The trains were given the all clear about 4:45 p.m.