Burundi has expelled a Rwandan diplomat, Desire Nyaruhirira, whom it accuses of destabilising the country.
He had been a top adviser at the Rwandan embassy in Burundi for many years.
The expulsion comes amid worsening relations between the East African neighbours.
Last week, Burundi accused Rwanda of training rebels seeking to destabilise the country, allegations it denies.
Government spokesperson Phillipe Nzobonariba said the expulsion was most likely due to the diplomat’s alleged contacts “with putschists hosted in Rwanda”.
“It is not a problem with a country but a problem with an individual since he is reported to be in permanent contact with coup plotters,” he said.
Rwanda has not commented on the expulsion.