They are not identifying the company, at this point.
Multiple agents with the IRS Criminal Investigations Field Office were at the high-rise on Post Oak Friday morning. They arrived around 10 a.m. and were still seen going in and out of the building Friday evening.
It was part of court-authorized investigation, according to Special Agent in Charge Ramsey Covington with the IRS Criminal Investigations Houston Field Office.
No arrests were made Friday and the investigation is ongoing, Covington said.
He said the office investigates tax violations and other financial crimes.
We are not identifying the company, at this point, since no charges have been filed.
Some people coming out of the building had their own opinions about the investigation.
"I'm surprised it took them this long," one man said.
A former employee who said he worked for the company for about 18 months said they wasn't surprised either. He said the company liked to "push the envelope" but he didn't think they were doing anything illegal when he worked there.