At least two people were killed Friday after a truck plowed into a crowded street area in Stockholm, Sweden.
The truck reportedly drove directly into a crowd of pedestrians before crashing into a department store in Stockholm City Centre.
A Swedish Security Police spokesperson told Swedish public radio that both the Stockholm subway system and Parliament are in lockdown.
"Some kind of vehicle has been driven into a street full of pedestrians," Swedish Police spokesman Lars Vilstrom said, according to CNN. "We have a lot of police officers on the scene. We don't have numbers yet.
"Police are on location securing the area. People have been injured but we cannot give a number of injuries at this time," he continued.
Swedish Prime Minister Stefan Lofven said all evidence suggests that the crash was a "terror attack."
The U.S. Embassy in Sweden has issued an emergency message for U.S. citizens in Stockholm:
The U.S. Embassy in Stockholm is aware of reports of a security incident at Drottninggatan and Mäster Samuelsgatan near Sergels Torg in Stockholm City Center. U.S. citizens should avoid this area at this time, heed guidance from local authorities, and maintain security awareness.
Please monitor media and local information sources and factor updated information into personal travel plans and activities.
We strongly encourage U.S. citizens in Sweden to directly contact concerned family members in the United States to advise them of your safety.
This is a developing story and will be updated as more details become available.