March 28 (UPI) -- Five people, including two Americans, were injured in a stabbing spree in the Dutch capital of Amsterdam, authorities said.
The stabbing was reported to police shortly before 3:30 p.m. local time Thursday, with officers arriving at the scene to find five people injured throughout St. Nicolaasstraat in central Amsterdam.
The unidentified suspect was apprehended with the help of bystanders on the nearby street of Gravenstraat, police said.
Unverified video widely circulated online shows the suspect on the ground being kneeled upon by a civilian. Police said the suspect sustained a leg injury and was transported to the hospital.
"The motive behind the attack is currently unclear and under investigation," Netherlands Police said a statement.