(Editor's note: After this article appeared, Tim Hortons apologized. See the story here.)

There's a Facebook campaign urging a boycott of a downtown Tim Hortons outlet after someone from inside the store soaked a homeless man and his dog with a bucket of water.

Tim Hortons spokesperson Michelle Robichaud emailed a statement to CKNW Radio saying, “We take these matters very seriously and as such we have launched an internal investigation.”

Meanwhile, CBC News quoted a witness, Peggy Morrison, who saw it happen outside the Tim Hortons on Robson Street between Richards and Homer streets.

"He didn’t throw it on him," Morrison told CBC News. "He poured it underneath so the blankets and consequently the dog and the man were both soaked. The [homeless] man jumped up. He was obviously shouting. The dog looked shocked and they started moving all of their stuff around the corner to the entrance of the IGA, which is where they remained."

The incident aroused some Vancouverites to go on Twitter and Facebook to comment.

Freelance marketer and writer Arianne N. Summach tweeted that the water was dumped on a "sleeping homeless person & his dog!"

"Bullying is never okay at any age," she declared.

At 3:07 p.m. on Friday (February 6), Summach launched the Facebook campaign.

She later noted that the person who dumped the water is being called "an alleged employee" by the company.

Another tweeter, @Shaking_Bug, also claimed to have witnessed it. He called the person with the bucket of water a "scumbag".

The company's "ethics and compliance program" includes a section about knowing and doing what's right and fair.

It suggests that people affiliated with Tim Hortons ask themselves some simple questions, including: "Would I feel okay if my actions appeared on the front page of my local newspaper?"

Another question states: "Am I sure my actions won't embarrass or damage either the Company or others?"

"If you can answer 'yes' to each of these questions, then what you are doing is probably okay," the document states.

Just down the street from this Tim Hortons outlet is a homeless shelter operated by the Catholic Church.

This isn't the first Facebook-inspired boycott of Tim Hortons.

In 2013, the company's use of temporary foreign workers prompted some Canadians to refuse to enter Tim Hortons outlets.

In December, Tim Hortons shareholders approved a $12.5-billion takeover by Burger King Worldwide Inc.

The federal government approved the deal, with Industry Minister James Moore praising the creation of a new global company with more than $23 billion in annual revenues.

"Our government is pleased to see companies like Burger King investing in Canada's economy and looking to benefit from our low taxes and open markets," Moore said in a statement.