Biggby Coffee responded Tuesday to a report that one of its trainees tweeted a statement thanking God "for that bullet that killed Trayvon Martin."

Biggby said:

The statement was prompted by a tweet two days after George Zimmerman was acquitted in the shooting death of Martin, who was 17. It was made by an employee hired to work at a Biggby in Livonia.

The employee's Twitter message, posted at 11:16 p.m. on the night a jury found Zimmerman not guilty of involuntary manslaughter and second-degree murder, said: "I want to thank god... for that bullet that killed Trayvon Martin."

The message spread and led to a social media backlash against the employee, who has since deleted her Twitter account, and her employer.

The Biggby Facebook and Twitter pages were flooded with complaints and demands that the tweeter be fired. Others called for a boycott of the company.

East Lansing-based Biggby Coffee was founded in 1995 and has grown to include more than 100 franchise locations in the Midwest.

The employee's tweet went public after

. The story spurned the social media outrage against the coffee company.