The Post’s story today about a 67-year-old Arizona man who died Wednesday evening after suffering an apparent heart attack while riding on Red Line train bound for Glenmont, prompted some longtime WMATA watchers, like the tweeter above, to inquire about whether a defibrillator was used and whether it was in good working order.

In 2012, a report in The Washington Examiner prompted the agency to inspect all of its units after one reportedly failed to work when a 51-year-old rider died of a heart attack while riding on the Yellow Line.

Metro’s General Manager Richard Sarles told The Post’s Paul Duggan that a defibrillator was used to try help the man Wednesday and that it functioned properly.

Metro Transit Police and the D.C. Fire and Emergency Medical Services Department were called to the scene at 5:40 p.m., said Metro spokesman Dan Stessel, and workers performed CPR on the man before bringing him to a local hospital.

The man was pronounced dead at 6:34 p.m., Stessel said.