The presentation of evidence began Monday in P.E.I. Supreme Court in the case of a Charlottetown man charged with trafficking in cocaine.
Jason Norman Yeo is alleged to have been a party to the sale of cocaine to an undercover police officer.
For this morning's proceedings, the Crown contends that Yeo aided and abetted Chase Roper in the sale of the cocaine.
Roper has previously pleaded guilty to trafficking in cocaine in connection with this incident and been sentenced.
The first witness called by the Crown was Const. Paul Glanville of the RCMP, who testified about his involvement in an investigation into street-level drug trafficking.
The RCMP officer was involved in surveillance of Yeo's activities during the relevant time period in May of 2012.
Glanville testified he followed Yeo and Roper as they travelled to a couple of different places and saw the pair make contact with an undercover RCMP officer in a service station parking lot.
When that meeting ended, and Roper and Yeo left the parking lot, the officer was in possession of 6.3 grams of a white, granular substance. Analysis of that substance revealed cocaine and benzocaine.
During cross examination, defence counsel Mitchell MacLeod asked Glanville about the weather that day, the vehicle he was using for surveillance and the brand and range of the binoculars he used during surveillance.
He questioned the officer on his vantage point during surveillance and asked him how clear his line of sight was and if his view was obstructed by oncoming vehicles.
The court was told there were vehicles going by but the officer's view was not hampered.
Questioned as to whether he actually saw drugs or money change hands, the officer said no.
Asked if he was aware of any evidence physically linking the cocaine seized to Yeo, he said he was not aware of any.
The courts also heard Monday from Const. Eric Campbell, another officer who took part in surveillance operations that day.
Campbell said his responsibilities involved taking notes detailing the surveillance operation, and using the notes he took as well as the notes of other officers involved to develop a timeline.
He said after he transcribed the notes, each officer involved read the notes referring to his particular observations, indicated whether they were correct or needed changes, and initialed the document.
During cross-examination MacLeod walked Campbell through a number of his observations.
There were some slight differences between what Glanville observed and what Campbell observed.
During re-direct the Crown asked Campbell who was in a better position to observe what was happening.
Campbell said Glanville was in a better position to observe what was taking place because he (Campbell) was also busy taking notes.
The trial resumes Tuesday before Supreme Court Justice Wayne Cheverie.
Roper is expected to take the stand when the trial resumes.