HALIFAX -- A former U.S. resident is in a Halifax court today to face charges of uttering threats and possessing a weapon for a dangerous purpose.

The RCMP brought Christopher Burton Phillips brought back to Nova Scotia from Ottawa on Thursday after he was arrested a day earlier at a hotel that had to be evacuated.

Police allege in a sworn information at provincial court that Phillips threatened a police officer and possessed osmium tetroxide, a highly toxic chemical.

The document alleges the offences took place between Boxing Day and Wednesday in Cole Harbour, a suburb of Halifax.

Two Halifax-area residences were evacuated during an investigation into the discovery of hazardous chemicals at the properties earlier this week.

Ottawa police arrested Phillips at the Chimo Hotel and linked the arrest to the discovery of the chemicals in Halifax.