Government officials say an unseasonal storm with heavy rain and hail has killed at least 30 people, injured more than a hundred and caused heavy damage to the winter wheat crop in eastern India.

Most of the deaths were caused Tuesday night by tin roofs blown off of poor people's huts by winds reaching 100 kilometers per hour (60 miles per hour) in northeastern parts of Bihar state.

State administrator Rajesh Kumar said 22 deaths were reported in Purnea district alone. Other deaths occurred in Supaul and Madhubani districts.

Authorities launched relief efforts in 10 districts hit by the storm. The area is about 360 kilometers (225 miles) northeast of Patna, the state capital.