At least 102 people have been killed in floods and landslides triggered by heavy rains in the Gamo Zone of southern Ethiopia, the local authority has said.

The official death toll, initially put at just over 30, has steadily risen over the past 24 hours. Earlier on Thursday, a senior policeman said 64 had died. Dozens are still missing.

Most of the casualties were in highland areas, where saturated slopes gave way after days of intense rain, officials have reported.

Torrential rains have unleashed widespread flooding across East Africa in recent days. Dozens have also died in neighbouring Kenya. Forecasters say storms are becoming more intense in the region, partly due to climate change.

Before the revised death toll, the governor of the South Ethiopia Regional state had offered his condolences to the affected families.

"On behalf of myself and the regional government, I express my deep sorrow over the loss of 30 lives due to landslides and floods in the highlands of Gamo Zone caused by heavy rains," Tilahun Kebede said in a statement on Facebook late on Tuesday.

Officials said the disaster followed sustained rainfall in surrounding districts.

The town of Arba Minch and neighbouring areas have experienced continuous downpours for two days, causing widespread damage to homes, infrastructure and farmland.

Authorities have warned that further flooding and landslides remain possible.

Mudslides have blocked key roads and several bridges have been flooded, prompting calls for the public to remain vigilant. Emergency teams are monitoring the situation.

Over the past two decades, numerous studies have documented a rise in both extreme wet spells and prolonged dry periods across East Africa.

Scientists have repeatedly cautioned that human-driven climate change is making severe weather events - such as intense, long-lasting downpours - more frequent and more severe.

More than 229 people, including rescuers, were killed by a landslide in the neighbouring Geze Gofa Zone in July 2024.

Additional reporting by Jean Otalor