Brazilian military police have launched internal investigations into two separate incidents of alleged excessive force, both captured on video and shared extensively on social media. In Senador Amaral, Minas Gerais, a traffic stop on 12 July turned violent when an officer was filmed punching, kicking, and striking a man with a helmet while a colleague looked on without intervening. Days later, in Catalão, Goiás, security cameras inside an auto-parts shop recorded a uniformed officer storming in, slapping and choking a 16-year-old apprentice, and pointing a firearm at his face while threatening to kill him. The Goiás force said it repudiated any misconduct and had taken immediate administrative steps; the Minas Gerais battalion stated it would examine the legality, proportionality, and individual conduct of the officers involved.

In Halifax, Canada, a 50-year-old man was stabbed on Wednesday evening near the intersection of Spring Garden Road and Brenton Street. Police provided first aid before paramedics transported him to hospital with injuries not considered life-threatening. A 30-year-old suspect was arrested the following morning and remains in custody. Investigators have not confirmed social media reports that the victim worked at a nearby shopping centre, and the motive remains unclear.

Swiss authorities are investigating a violent altercation in Zurich’s Bäckeranlage park that left a 52-year-old German national with life-threatening injuries. A 34-year-old Iranian man was detained at the scene on Thursday morning, according to the city police. Forensic specialists and the public prosecutor’s office for serious violent crime have been deployed, and witnesses are being sought to establish the sequence of events.

In Malaysia’s Kuala Muda district, police arrested a security guard in his 30s after a video showed a man on a motorcycle brandishing a sharp weapon and pulling the headscarf of an elderly woman while ordering her onto the vehicle. The woman, believed to be mentally disabled, had been visiting a zakat office with her son to submit a home-repair quotation. The case is being investigated under criminal intimidation laws, and officers are looking for additional witnesses.

All four cases remain under active investigation, with no final determinations on culpability or disciplinary measures announced. The incidents have renewed scrutiny of police use-of-force protocols in Brazil, while the other attacks are being treated as criminal matters by local prosecutors.