Vedaste Hakizimana, 38, was using his shop as cover to sell cannabis to consumers.
He was arrested on Thursday after 98 pellets of cannabis were recovered from his shop located in Rusumo Cell of Gatumba Sector.
Chief Inspector of Police (CIP) Bonaventure Twizere Karekezi, the Police spokesperson for the Western region, said that Hakizimana had used his shop as address for cannabis abusers.
"Residents reported Hakizimana to local leaders that he sells cannabis in his shop; local authorities in turn called the Police," CIP Karekezi said.
"We later conducted an operation recovered the pellets in his shop, which were concealed in other goods," he added.
"It is said that Hakizimana was a retailer of cannabis in Gatumba Sector and is connected to a ring of drug traffickers; some of them have been arrested and others still at large."
CIP Karekezi said that there is a ring of cannabis traffickers and retailers, some of whose particulars have been discovered through information sharing with the public, including Hakizimana.
He warned that operations are continuous for any drug dealer to "face the wrath of the law."
"The law is very clear and the punishment for engaging in drug related crimes is severe. We appeal to the public to maintain the spirit of information sharing so as to prevent such people from poisoning Rwandans and the young people in particular, who are the majority of victims," CIP Karekezi warned.
Anyone convicted of trafficking and selling narcotic drugs faces a sentence of between 20 years and life in prison, and a fine of up to Rwf30 million, as stipulated under article 263 of the penal code.