11.   Shappell said an investigation was launched to determine who shot the protesters.

12.   Still, other outdoor concerts were canceled around France and a judicial investigation was launched to determine who might bear responsibility for the deadly accident late Friday.

13.   The cause of death was as yet unknown and an investigation has been launched to determine what happened.

14.   The study was launched to determine whether too much iodized salt was being consumed and would create medical disorders.

15.   A criminal investigation has launched to determine the source of the waste, the television added.

16.   An enquiry is to be launched to determine who was to blame for the accident, the spokesman added.

17.   An investigation had been launched to determine the cause.

18.   An investigation has been launched to determine the cause.

19.   An investigation has been launched to determine what caused the blast at the Winkelhaak mine, in Mpumalanga province, the SAPA news agency said.

20.   An enquiry was launched to determine whether the soldier was deliberately targeted or was the victim of the almost-permanent crossfire between the two sectors.