Khawlneihmawii (40) of Aizawl was arrested in this connection, a spokesman for the Excise and Narcotics department said.
Earlier on Monday evening, the Anti Narcotic Squad officials had seized 47.5 gm of heroin from Vaivakawn area in Aizawl and arrested C Vanlalliana (35) of Aizawl and Vanbiakthanga (29) hailing from the Mizoram-Myanmar border Zokhawthar village in Champhai district in this connection.
The accused were booked under relevant sections of the Narcotic Drugs and Psychotropic Substances Act, 1985 and remanded to judicial custody in the Central Jail near Aizawl, the spokesman added.