Sindh Information Minister Sharjeel Memon on Saturday said the police have arrested seven more target killers in the metropolis. Memon said that 36 police encounters took place in the city during April 13 to 21, adding that names of some target killers could not be made public. He said that though several target killers belonged to political parties action would be taken irrespective of their affiliation. Measures have been taken against target killers, he said, adding that target killing and extortion existed in the city since long.