KATHMANDU: Police on Thursday arrested two persons in possession of illegal marijuana. The arrested have been identified as Prem Tamang (51) of Taulung, Budhanilakantha Municipality-1 and his 21-year-old son Mukesh. A team deployed from the Metropolitan Police Sector Budhanilakantha had raided Tamang's bedroom and found a kilo of marijuana. Police are investigating into the case.