<span style="color: #222222;">In Pakistan, a mysterious toxic gas has killed 11 people and sickened several others in Karachi. A Hospital spokesperson Amir Shehzad told that nine deaths took place at the hospital over the course of the past two days.<br />'' <br />'' According to the police, two other deaths were reported at another Hospital.<br />'' Authorities were ed to the incident when the residents of Karachi's Keamari area began rushing to nearby hospitals with severe breathing problems on Sunday night.  <br />''<br />''Dozens of others have been hospitalised in various medical facilities across the city. The source of a toxic gas leak remained unclear.</span><br />