Sindh home ministry says "clash" occurred between security guards, foreigners at police station.

Two Chinese nationals were shot at a factory in the Pakistani commercial hub of Karachi. They are being treated at a local hospital and one of them is in critical condition.

While it is unclear who carried out the attack, recent events have heightened fears among Chinese nationals living and working in Pakistan.

This is the third incident of violence targeting Chinese in the country this year

Pakistan News: Two Chinese nationals were injured in a shooting at a Karachi factory. China had demanded improved security following attacks, including a bombing that claimed two Chinese engineers' lives last month.

The Chinese nationals were shot by the security guard at a garment hub in Pakistan's Karachi. A police official said that the guard hadn't been arrested and the motive behind the shooting was unclear.