Rangers said suspect Khalid was involved in murder of SHO of Sir Syed police station.
Suspects were handed over to the different police stations for further probe.
Sindh Rangers spokesman said the captured suspects were involved in several incidents of robberies.
Spokesperson of Rangers said different medical facilities were being provided at the heatstroke centres to protect citizens from heat.
The Rangers spokesman said illegal weapons and looted valuable items were recovered from the suspects.