A manhunt was underway early on Sunday, police in Switerland said. A major police operation has been launched after the shooting at an event near Zurich overnight. Key points and original sources are listed below.

• A manhunt was underway early on Sunday, police in Switerland said.S1

• A major police operation has been launched after the shooting at an event near Zurich overnight.S2

• Shots were fired early on Sunday at an event attended by around 3,500 people in Aarau, Switzerland, killing at least one person and injuring five others, some seriously. Police have launched a large-scale operation.S3

• The shooting happened outside a rave in the northern Swiss town of Aarau. Police said they were still searching for the perpetrators.S4

• The shooting reportedly happened outside a rave in the northern Swiss town of Aarau.S5