The fugitive is suspected to be hiding in the country.
Mpiranya, a former Commander of the Rwanda Presidential Guard, is wanted by the International Criminal Tribunal for Rwanda in connection with the 1994 genocide.
The Rwandan is suspected to have business interests in many countries in the Sadc region and Europe.
According to investigations, Mpiranya is believed to be using other names such as Theophase Mahuku and James Kakule to evade arrest.
A senior police officer yesterday confirmed that they were looking for Mpiranya although they did not have leads as yet.
“The United Nations is offering that reward and if he is in the country we are also looking for him since we have been approached to assist with the investigations,” said the officer.
Mpiranya is alleged to have participated in the mass killings of 600 000 civilians in Rwanda in 1994 during the time of former President, Juvenal Habyarimana.
Last year the tribunal trying suspects of the 1994 Rwandan genocide complained to the United Nations (UN) Security Council that it was encountering difficulties in tracking a top fugitive believed to be holed up in Zimbabwe.
International Criminal Tribunal for Rwanda (ICTR) prosecutor Justice Hassan Jallow wrote to the UN Security Council recently saying there were difficulties in apprehending Mpiranya.
Justice Jallow said Zimbabwe should prevent the genocide fugitive from evading justice.
The prosecutor said they had requested for co-operation and assistance from the Zimbabwean Government in bringing Mpiranya to justice.
Last year, Government through the Immigration Department distanced itself from harbouring Mpiranya in the country.
Mpiranya is being accused of genocide, conspiracy to commit genocide, complicity in genocide, crimes against humanity and war crimes.
He remains at large and is one of the most wanted men by the tribunal.
During the genocide in 1994, he was Commander of the Presidential Guard Battalion within the Rwandan Army and exercised authority over various units of this battalion.
Forces under his command were alleged to have been responsible for the sexual assault and murder of Agathe Uwilingiyimana, former Rwandan Prime Minister, as well as the brutal murder of 10 Belgian UNAMIR soldiers.
Alongside powerful figures such as convicted génocidaire, Theoneste Bagosora, Mpiranya is accused of participating in the planning, preparation and execution of a plan to exterminate the Tutsi population of Rwanda.



