Accused killer's friend breaks down in witness box at Laura Babcock murder trial

A friend of accused killer Mark Smich broke down in tears in the witness box Thursday after the Crown played a video of Smich rapping about burning a body and getting rid of evidence.

"It's just a lot to process," David Cronin, 22, told the jury at the Laura Babcock murder trial being held in Superior Court in Toronto. He paused for a few moments while testifying to gather his composure.

Babcock's mother Linda, sitting in the front row of the public gallery next to her husband, held a tissue to her eyes.

• ReadCBCNews'sfull coverageof the LauraBabcockmurder trial

It's only Day 4 of the trial, but several witnesses have broken down while testifying, including the victim's former boyfriend.

Dellen Millard, 32, of Toronto, and Smich, 30, of Oakville, Ont., have both pleaded not guilty to first-degree murder.

Babcock was 23 when she disappeared from Toronto in 2012. The Crown alleges she died at the hands of Millard and Smich, who then burned her body in an animal incinerator.

'A lot to process'

Cronin testified he'd never seen the30-second clip ofSmichrapping, but the lyrics were the same ones he heard five years ago.

Cronin was just 14 at the time and still in high school. He said he was hanging out withSmichand several other friends inSmich'smother's garage inOakville, Ont., in August 2012, whenSmichmade a chilling confession.

Cronin testifiedSmichsaid he "killed a girl, burned a body, and disposed of it in a lake.... After that he sang us a rap song about it."

The Crown read the lyrics during opening statements:

The bitch started off all skin and bone

now the bitch lay on ashy stone

last time I saw her's outside the home

and if you go swimming you can find her phone.

Cronin said he didn't believe it at the time, thinkingSmichjust wanted to be "the big cool guy."

It wasn't until he saw media reports thatBabcockwas missing, nearly a year later, that he told his high school vice-principal, who then called Toronto police so he could give a statement.

'Sordid past'

Smich'slawyer ThomasDungeyhammered away at Cronin during cross-examination for more than an hour, attempting to discredit his testimony, and questioning the witness's own "sordid past."

It was an almost identical line of questioningDungeyused yesterday, when another one ofSmich'sfriends,DesiLiberatore, testified about the rap song and confession.

Dungeygrilled Cronin about his drug use and checkered past. Cronin admitted to being a recovered heroin addict, but insisted he's worked hard to turn his life around.

StillDungeyquestioned more than a dozen incidents Cronin was involved in as a youth, as well as getting kicked out of his parents' house.

Cronin said he studied pre-law and at one point considered becoming a police officer.

"I worked very hard to get my life together. Yes, I had problems when I was young. Yes, I was mischievous. I know you're trying to discredit my information. But I've worked very hard to get where I am today."

Babcockdidn't cross U.S. border: Crown

The Crown also continuedto build its case thatBabcockdidn't disappear on her own accord.

MichaelPowell, a director with U.S. Border Control, testified briefly Thursday.

He said border officials were contacted by Toronto police during their investigation.

Powellconfirmed the last timeBabcockvisited the U.S., and returned back to Canada, was in May 2011.

The testimony is similar to what court heard earlier this week from a TD Bank employee. The Crown submittedBabcock'sbank statements as evidence, showing activity stopped after the date she's alleged to have been killed.

Millard, who is acting as his own lawyer, attempted to poke holes in the Crown's theory, asking the border expert to list the numerous illegal ways people can get into the U.S.

Powellsaid he couldn't answer the question for security reasons.

Dungey,Smich's lawyer, also pressedPowellabout illegal crossings pointing out the U.S.-Canada border is the longest common border in the world and must be impossible to monitor 100 per cent of the time.

"No, there's technology. The entire northern border is patrolled with technology or personnel,"Powellresponded.

The trial continues Friday and is expected to last 10 weeks.

Read our blog coverage from the court below: