The Narcotics Control Bureau seized 136 gram mephedrone, a banned drug, worth around Rs 15 lakh in Mumbai and arrested three persons in this connection, an NCB official said on Tuesday.

The probe team also nabbed three persons in this connection and they were being questioned, the official said. The accused have been identified as Md Bilal, Shaikh Gulam Gosh and Sehbaz ShahAlam Sheikh. The two accused were working for Sheikh. Bilal and Gosh were arrested from Mahim railway station, said Sameer Wankhede, Zonal Director, NCB, Mumbai zonal unit.