A gunman killed 8 people and wounded 7 others at an outlet mall, leaving the community to grapple with the 2nd-deadliest mass shooting in the United States this year.

Federal agents have been reviewing social media accounts they believe were used by Mauricio Garcia, 33, and posts that expressed interest in white supremacist and neo-Nazi views.

A 39-year-old woman was pronounced dead at the scene of the shooting. The four wounded remained in critical but stable condition Wednesday.

Mass shootings are extremely rare in Serbia and in the wider Balkan region; none were reported at schools in recent years.

The tragedy comes in a year marked by an uptick in mass killings in the United States.

A judge has put off a decision on whether the Massachusetts Air National guardsman accused of leaking highly classified military documents should be held in jail until his trial.