A Halifax police officer brought in to photograph the apartment where prosecutors say Catherine Campbell was strangled testified today he found what he suspected were blood droplets in the den and a bathroom sink.

Det. Const. Marshall Hewitt told a Nova Scotia Supreme Court jury he took dozens of photos of the McCully Street home after police obtained a warrant to search the address.

Christopher Garnier is on trial in Nova Scotia Supreme Court in Halifax for second-degree murder and interfering with a dead body. He is accused of killing Campbell, a Truro, N.S., police officer who was off-duty at time, in September 2015.

He has pleaded not guilty to both charges.

The jury also heard testimony this morning from taxi driver Simon Zakarias, who said he picked up a man and a woman after they flagged him down on Sackville Street in Halifax.

It wasn't established during his testimony that it was Garnier and Campbell. But the jury has heard testimony and seen surveillance footage showing Garnier and Campbell embracing earlier at a nearby bar and leaving together.

Neither person appeared impaired when they were in his cab, Zakarias said. They weren't fighting, he testified, but he sensed there was tension, although he couldn't hear what the pair were saying.

He drove them to an apartment on McCully Street. The Crown alleges that's where Campbell was murdered.