Richard Oland's son Dennis has hired Gary Miller, a criminal defence lawyer. (sailworld.com/Guy Perrin)

The son of slain Saint John businessman Richard Oland has hired a high-profile criminal defence lawyer, CBC News has learned. 

Oland, 69, was found dead in his Saint John office on July 7.

Gary Miller confirmed he's been retained by Richard Oland's son, Dennis Oland. He declined to offer any other comment.

Miller, who is based in Fredericton, is one of the most prominent criminal defence lawyers in New Brunswick.

He is perhaps best known for representing the late native rights activist Noah Augustine, who was found not guilty of second-degree murder in 1999 in the shooting of Bruce Barnaby of Eel Ground First Nation.

Miller is also past president of the New Brunswick Criminal Defence Lawyers' Association.

Saint John police are investigating Oland's death as a homicide.

No charges have been laid, and no information has been released about how Richard Oland died, whether any weapons were involved or possible suspects. All police have said is that Oland likely knew his killer.

One week after his death, police searched the Rothesay home and property of his only son Dennis.

They also searched a boat at the Royal Kennebecasis Yacht Club that belongs to Dennis' wife, Lisa Ferguson.