Delhi Police have arrested four persons allegedly linked to the banned Popular Front of India (PFI). They have been arrested in a case registered against them at Shaheen Bagh police station under the  Unlawful Activities (Prevention) Act. <br />''<br />''<span style="color: #222222;">Earlier, Delhi Police had conducted raids at PFI units in the national capital and detained some people allegedly linked with the group.</span><br />