FAIRHOPE, Alabama—Federal agents served a subpoena at the Daphne business of state Sen. Trip Pittman this week in the investigation of a contract between his company and the city of Fairhope for oil spill response a month after the Deepwater Horizon explosion in April 2010.

“They always say in an investigation you don’t want to be the one left out, so I have been served, and I feel better now,” Pittman, R-Montrose, said Wednesday. “I went through the bingo situation (in Montgomery) with all those subpoenas flying around. I actually was subpoenaed. That was the first federal subpoena I had ever gotten. I was pretty nervous about it. But when you want to worry is when you don’t get a federal subpoena.”

Pittman said he was not at Pittman Tractor Co. on Tuesday this week when two federal agents dropped off a subpoena for documents.

“The date is the end of this month to provide the documents,” he said. “I’m not sure whether I’m supposed to appear in person or just send the documents over.”

The subpoena is the latest evidence of an investigation that began in about November 2010, according to Pittman, who said a number of businesses with which his company works have also been subpoenaed.

Last month at least six subpoenas were served on Fairhope officials and staff, including its mayor, clerk, city administrator, information technology director, purchasing manager and others.

This week the clerk declined to provide a copy of any of those subpoenas, citing the confidentiality of the grand jury process.

Although Mayor Tim Kant was not in his Fairhope office last Friday, he was seen at the federal courthouse that day but refused to confirm whether he had appeared before the federal grand jury.

“I have been advised not to say anything,” Kant said Saturday, citing grand jury secrecy rules. “I can’t comment one way or the other.”

All senior staff members in Fairhope that received subpoenas were also not in their offices last Friday and none returned phone calls seeking comment about whether they had appeared before the grand jury that day.

A spokesman for the United States Attorney’s Office in Mobile has stated they do not confirm or comment on pending investigations.

Pittman also would not provide a copy of the grand jury subpoena he received this week but did say it sought a significant number of records related to the contract his company received from the city of Fairhope in June 2010 for oil boom work.

“As I’ve said from the beginning, the facts are the facts,” Pittman said. “Everything’s on the up and up. Any document they want, I’ll be happy to give to them. I’ll give them everything I have.”

Bulletin News Director Gabriel Tynes contributed to this article.