The Narcotics Control Bureau has seized drugs, including some concealed in photo frames which were to be smuggled to Doha, worth Rs one crore in different operations here in a week and arrested four people, an NCB official said.

The seized drugs include 19 kilograms of ganja, 1.15 kg of hydroponic weed,13,500 Nitrazepam tablets and 3,840 Tramadol tablets and some international drug syndicates have been identified following the arrests, he said.