The shooting happened outside a rave in the northern Swiss town of Aarau. The incident happened in the northern Swiss canton of Aarau, around 46km west of Zurich. Key points and original sources are listed below.

• The shooting happened outside a rave in the northern Swiss town of Aarau. Police said they were still searching for the perpetrator.S1

• The incident happened in the northern Swiss canton of Aarau, around 46km west of Zurich.S2

• Police says all victims Swiss residents, manhunt underway as army helicopter monitors overheadS3