31.   He said residents had been advised to remain in their homes for several hours until authorities determined the nature of the chemical involved.

32.   He said the military could not determine the nature of their activity in the area.

33.   Hoyda said residents had been advised to remain in their homes for several hours until authorities determine the nature of the chemical involved.

34.   The spokesman said police were still trying to determine the nature of the explosive charge.

35.   The suitcase was taken to a police laboratory to determine the nature of the explosives, police said.

36.   Kleiber is suffering from a kidney tumour and requires immediate surgery to determine the nature of the tumour, a medical expert told the court.

37.   On Wednesday forensic scientists sifted through debris on the train in an attempt to determine the nature of the explosive used in the hope it could provide a lead.

38.   Pahlavi said he wanted Iran to be a secular democracy and favored holding a national referendum to determine the nature of the future regime.

39.   Police are investigating to determine the nature of the object.