Nigerian authorities say flash floods killed at least 102 people in the country's southwest in the past week.

The Nigerian Red Cross Society says hundreds of residents were displaced after floodwaters from a collapsed dam swept away homes in the town of Ibadan, 150 kilometers from the port district of Lagos. The floods also knocked out three bridges in the area.

Officials say poorly constructed housing and inadequate or clogged drainage systems have worsened the threat of seasonal flooding in many Nigerian neighborhoods.

Nigeria is currently on the tail end of its rainy season, which lasts from around May until September. Authorities have warned of particularly intense rains this year.

Severe flooding in the country last year displaced around 500,000 people.