First tremor recorded at midnight on Monday.Epicentre near Malir, depth around 40 kilometres.Third jolt recorded near Korangi early Tuesday.Karachi has now experienced 19 mild earthquakes since Sunday, the Seismic Monitoring Centre of the Pakistan Meteorological Department (PMD) confirmed on Tuesday. The latest tremor occurred at 9:57am, registering a magnitude of 2.8. The epicentre of the 16th quake was located northeast...