“We are currently working with multiple other agencies to search Cranston and the area around Bragg Creek for evidence.”
Mr Leeming said he was being treated as the prime suspect because he was “the last person to see them” on the evening of Thursday April 18.
The day before, they had gone to a picnic area at Bragg Creek, a beauty spot around 40 miles away from Cranston, he said.
Mr Leeming, who described his relationship with Ms Lovett as “just good friends”, said he went out with the mother and baby for “beers and some food” before returning home.
“Nothing unusual,” he told reporters.
Mr Leeming said he was from England but had moved to Canada in 2013 and had been issued permanent residency.
Ms Lovett and her child had been living at his property since October.
Asked if there had ever been any romantic involvement between them, he replied: “There was initially, but towards the end no.”
On Saturday, Calgary Police appealed for anyone who saw a “Caucasian man in his mid-30s” driving a Mercedes SUV in the Bragg Creek area between April 16 and April 20.
“The Calgary Police Service continues to search for evidence in the suspected homicides of Jasmine Lovett and Aliyah Sanderson,” the force said.