At least six people were killed and several others injured after a building housing students in India's capital Delhi, collapsed, the city-state's chief minister said on Monday, as rescuers searched for anyone still trapped in the debris. Building collapses are a recurring hazard in parts of India during the June-to-September monsoon season, when heavy or prolonged rain can weaken older structures. Key points and original sources are listed below.

• At least six people were killed and several others injured after a building housing students in India's capital Delhi, collapsed, the city-state's chief minister said on Monday, as rescuers searched for anyone still trapped in the debris.S1

• Building collapses are a recurring hazard in parts of India during the June-to-September monsoon season, when heavy or prolonged rain can weaken older structures.S2