The explosion occurred around 4:30 p.m. in the center of the Austrian capital.
Videos and pictures of the scene posted online showed a huge hole in the front of a building and a debris-covered street. Several men could be seen carrying a person away from the blast site.
— Terror Alarm (@isisalarm_com) June 26, 2019
Hier Bilder nach schwerer Explosion in Haus in der Pressgasse in Wien. Druckwelle war mehrere Gassen weiter spürbar, Explosion sehr laut. Derzeit grossräumig abgesperrt, Verletzte werden versorgt. pic.twitter.com/NM7uLOGIb5
— Erich Ulrich (@Erich_Ulrich) June 26, 2019
— W24 (@Wien24) June 26, 2019
Police had earlier said four people were seriously injured but later lowered the number to two.
Officers cordoned off streets around the scene of the incident as they searched for further victims.