Police in Newport launch a murder investigation after a woman dies following an incident described by officers as an “altercation” in a street in the city centre area. Multiple outlets report that the incident prompts an urgent police response, including the attendance of armed/firearms officers at the scene. Authorities say they are appealing for information from the public to help establish what happened and identify any witnesses. Several reports also note that police close roads in the vicinity while the investigation is ongoing, with updates provided on which streets are affected. The investigation is treated as a homicide, and detectives work to determine the circumstances leading to the woman’s death. Media coverage indicates officers are coordinating the response and gathering evidence, while residents are advised to avoid affected areas and follow instructions from police. Details beyond the broad description of events and the launch of the investigation are not consistent across reports, but all sources reference the same core facts: a woman dies in Newport, police call it a murder investigation, and they seek information as part of an active inquiry.