Video released by Spain's National Police showed agents encircling the man, who wore shorts and a T-shirt and walked slowly. In the surveillance camera footage, a police officer throws a large plastic bollard at the man, who falls over before other officers subdue him.
One of the officers was treated after he received a small cut to one finger, Spain's Interior Ministry delegate for Melilla, Abdelmalik El Barkani, told reporters at a news conference.
The man, believed to be a 29-year-old Moroccan citizen, was arrested and brought to a police station where he was questioned.
El Barkani said that the investigation into the incident is still open and all hypotheses are being considered.
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