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Toronto police trying to figure who built mysterious tunnel and why

  • A copy of a Toronto Police photo of  a tunnel found near York University in Toronto is shown during a press conference in Toronto on Tuesday, Feb. 24, 2015. Police are asking for the public's help in trying to determine who built the mysterious underground tunnel. (AP Photo/The Canadian Press, Chris Young)

    A copy of a Toronto Police photo of a tunnel found near York University in Toronto is shown during a press conference in Toronto on Tuesday, Feb. 24, 2015. Police are asking for the public's help in trying to determine who built the mysterious underground tunnel. (AP Photo/The Canadian Press, Chris Young)  (The Associated Press)

  • A copy of a Toronto Police photo of  a tunnel found near York University in Toronto is shown during a press conference in Toronto on Tuesday, Feb. 24, 2015. Police are asking for the public's help in trying to determine who built the mysterious underground tunnel. (AP Photo/The Canadian Press, Chris Young)

    A copy of a Toronto Police photo of a tunnel found near York University in Toronto is shown during a press conference in Toronto on Tuesday, Feb. 24, 2015. Police are asking for the public's help in trying to determine who built the mysterious underground tunnel. (AP Photo/The Canadian Press, Chris Young)  (The Associated Press)

  • Toronto's Deputy Police Chief Mark Saunders gestures as he explains evidence photos to the media about a tunnel found near York University in Toronto during a press conference in Toronto on Tuesday, Feb. 24, 2015. Police are asking for the public's help in trying to determine who built the mysterious underground tunnel. (AP Photo/The Canadian Press, Chris Young)

    Toronto's Deputy Police Chief Mark Saunders gestures as he explains evidence photos to the media about a tunnel found near York University in Toronto during a press conference in Toronto on Tuesday, Feb. 24, 2015. Police are asking for the public's help in trying to determine who built the mysterious underground tunnel. (AP Photo/The Canadian Press, Chris Young)  (The Associated Press)

Police are asking for the public's help in trying to determine who built a mysterious underground tunnel near York University in Toronto.

Deputy Chief Mark Saunders said Tuesday the tunnel is 10 meters (10 yards) long and two meters (two yards) high. He says it isn't near any infrastructure and doesn't appear to lead anywhere.

The chamber was discovered Jan. 14 in a wooded area by a conservation officer. Saunders says more than one person with some level of expertise likely built it.

Police found plywood wall supports, a generator, moisture resistant light bulbs and a sump pump. They also found a rosary with a Remembrance Day poppy nailed to a wall.

Saunders says there's nothing to suggest a criminal element.