Fairfax County Police say they responded to the 2900 block of John Marshall Drive, in the Seven Corners area, around 6:15 a.m. for a report of a stabbing. There, they found a man dead and a woman injured inside an apartment.
Responding officers located the suspect nearby and took him into custody, according to a Fairfax County police spokesman. The suspect and the officer were hurt during the arrest. The officer, the suspect and the injured woman were all taken to a nearby hospital with what are only described as non-life-threatening injuries.
The incident is being investigated as a homicide.
The arrest of the suspect took place in or around Upton Hill Park in Arlington, according to Arlington County Police Department spokesman Dustin Sternbeck.