Heavy seasonal rains have caused the Niger and Benue rivers to burst their banks, inundating communities, farms and trapping tens of thousands of people in their homes.Sani Datti, from the National Emergency Management Agency (NEMA), told AFP: “We have declared a national disaster in four states — Kogi, Delta, Anambra and Niger.“Eight other states are on the watch list. All these states have been the worst hit by the flooding. About 100 people have lost their lives in 10 states.”Kogi and Niger are in central Nigeria while Delta and Anambra are in the south.The Kogi state capital, Lokoja, lies at the confluence of both rivers and has been virtually submerged because of the rising waters.NEMA said water levels on Monday were continuing to rise in Lokoja and hadMets manager Terry Collins resigned Sunday after seven seasons and said he will take a position in the team's front office.

"It's been a blast, but it's time," the 68-year-old Collins said.

Collins announced he was stepping down after the Mets lost to Philadelphia 11-0, finishing a 70-92 season that began with great expectations but was quickly derailed by injuries.

"It's one of those years you want to forget, and I will. Tomorrow," he said, saying this season left a "sour taste."

The Mets were 551-583 overall under Collins, reaching the World Series in 2015 and earning an NL wild-card spot in 2016.

Collins was the oldest manager in the majors and recently said he had no plans to retire after this season. His two-year contract was set to expire after this year.