Speaking to the media on Mother's Day, Mary Bosma pleaded for the safe return of her 32-year-old son Tim Bosma, who was last seen when, selling a pickup truck online; he met two strangers for a test drive.

An emotional Mary Bosma described the painful ordeal her family is going through as they await answers about her son.

"We don’t know where he is, if he’s safe and who’s got him," Mary Bosma. “My heart is broken. I love him so much. This Mother’s Day, my prayer and my wish is that Tim will come home safely to his wife and daughter.”

Meanwhile, the search for clues in Tim’s disappearance has extended into Waterloo Region. 

Saturday police tape was put up around Millard Air Hangar 53 at Waterloo International Airport in Breslau.

A police cruiser sits remains outside the hangar.

Hamilton police tell CTV News that they have secured a search warrant but are waiting until Monday to enter the hangar.

They say they were busy conducting other searches Sunday but remained tight lipped about where.

On Saturday, Hamilton police Supt. Dan Kinsella announced that they had arrested 27-year-old Dellen Millard of Toronto and charged him with forcible confinement and theft over $5,000.

Millard's family reportedly founded Millard Air, a charter airline that has operations in Waterloo Region.

When he was 14 years old, Dellen Millard became the youngest person in the world to fly a helicopter solo.

At a news conference, Kinsella said the male suspect was arrested without incident while driving in Mississauga, west of Toronto.

Kinsella says the man in custody has the word "Ambition" tattooed inside a box on his wrist -- matching the description of a "unique" tattoo spotted on one of the suspects.

Friends and family continue to hand out posters and flyers in Brantford, where Bosma’s cell phone was found Thursday.

“Information is being obtained, search warrants are being prepared and evidence is being gathered.” Kinsella informed the media Saturday.  He also added, “We are encouraged with the progress of the investigation and must be cautious in our approach over the next few critical hours.”

Meanwhile the hunt for Bosma, his Dodge Ram pickup, and a second male suspect, continues.

Police in Hamilton, Toronto, and Waterloo say they're following up more than 300 tips from the public.

They are encouraging anyone with information to call the tip line at 905-546-2100.

 

With files from The Canadian Press and CTV Toronto