KARACHI, Pakistan — At least 13 people, including women and children, were killed Thursday after a gas cylinder blast caused a residential building to collapse in this southern port city, police said.

The big picture: The explosion occurred on the first floor of a multi-story compound in Soldier Bazaar, a densely populated neighborhood in eastern Karachi.

By the numbers:

• 13: Total confirmed fatalities so far.
• 7: Children among the dead, including a two-year-old.
• 12+: Injured survivors rescued from the site.

Why it matters: This is the second major urban tragedy for Karachi in recent weeks, following a massive mall fire last month that killed over 70 people.

Between the lines: While over a dozen people have been rescued, emergency workers warned that more residents could still be buried in the rubble.

What’s next: Police official Summaiya Syed confirmed authorities are investigating the specific trigger for the explosion.