Interior Minister Rehman Malik on Friday stressed the need for investigation of spurious drugs case in Lahore.

Speaking at a National Assembly session, Malik informed the house about adding names of owners of the involved pharmaceutical companies in the Exit Control List (ECL).

On Wednesday, Punjab Chief Minister Shahbaz Sharif had told the media that a British laboratory had found 50mg of an anti-malarial agent in Isotab produced by Efroze Chemicals in Karachi.

According to Sharif, local laboratories from Karachi to Peshawar had declared the suspected medicines usable.