1.   An investigation indicated the champagne had been spiked with cyanide, Interfax said.

2.   An investigation indicated the champagne had been spiked with cyanide, the Interfax news agency said.

3.   On Monday, the Interfax news agency reported that an initial investigation indicated the champagne had been spiked with cyanide.

4.   The Interfax news agency reported Monday that an initial investigation indicated the champagne had been spiked with cyanide.