Severe flooding and land sliding killed 30 people and leaving hundreds of thousands homeless, authorities said. The states most affected by the flooding are Maranhao, Piaui, Ceara, Alagoas and Bahia. Six people were killed and six major highways were inundated in Maranho, drenched by the heaviest rains since 1985, civil defense authorities said. Sao Luis, the state capital, and 40 other towns have been battered by rains that have lasted nearly a month. An estimated 400,000 people were forced to leave their homes, and of those 22,000 lost their homes, a civil defense spokesman said. In the small state of Alagoas, four people were killed in mudslides and flooding. Deaths also were reported in Ceara, Bahia and Piaui.