Nsengiyumva had concealed the narcotics in a sack of onions so as not to be identified and arrested, Police said.
Chief Inspector of Police (CIP) Bonaventure Twizere Karekezi, the Police spokesperson of the Western region, said that Nsengiyumva was reported by local residents.
"People at Gihira stage in Muhira Cell, Rugerero Sector where commercial cyclists normally park, reported that Nsengiyumva had left with a luggage but with quantities of cannabis concealed in it. He was trailed and intercepted in the neighbouring Nyundo Sector where it is suspected he was delivering the narcotics," CIP Karekezi said.
He, however, added that Nsengiyumva declined to name the person who gave him the sack of onions which also contained the narcotics as well as the person to whom he was delivering it.
The spokesperson thanked those who provided information that led to the seizure of the narcotics and arrest of the suspected trafficker.
It is suspected that Nsengiyumva is part of the chain of traffickers especially supporting in transportation.
CIP Karekezi warned cyclists against working with or facilitating drug traffickers and urged them to be community policing agents by reporting their colleagues and other people engaged in this criminal business.
Anyone convicted as a major drug trafficker and dealer in "severe drugs", faces between 20 years and life in prison and a fine of up to Rwf30 million, under article 263 of the law relating to offences and penalties in general in Rwanda.