A Logan County man who investigators say set up secret cameras to film and photograph three children in a bathroom was one of 245 people arrested in a nationwide investigation into producers of child pornography, federal law enforcement officials said yesterday.

Mickell E. Close, 31, of Quincy, is in the custody of the U.S. marshals, according to U.S. Immigration and Customs Enforcement, which led the sting.

Close was arrested on Nov. 8. He faces seven counts of possessing, producing and transporting child pornography.

Khaalid Walls, an ICE spokesman, said Close had regular contact with the children he is accused of filming.

“They have been taken out of that dangerous and exploitative situation and have been placed in a safe environment,” Walls said.

Walls would not disclose the children’s ages in Close’s case.

Close’s arrest was part of a five-week string of arrests called “Operation Sunflower” that started Nov. 1 and ended Dec. 7. Federal authorities found 44 children who were being sexually exploited in their homes and 79 others who either were being exploited outside their homes or who are now adults who were victimized as children, according to ICE.

The Franklin County Internet Crimes Against Children Task Force and the Logan County sheriff’s office assisted in Close’s arrest.

Franklin County Sheriff Zach Scott said investigators track producers of child pornography through software that monitors websites where people share pornographic video files.

Franklin County made 124 arrests for child pornography in 2012 and 114 in 2011, Scott said. He said investigators are finding more real-time cameras showing children in sexually explicit situations.

“One of the trends we’re seeing is, they’re doing more real-time stuff,” he said. “And they’r e trying to produce more locally.

“If you saw some of the stuff, you just wouldn’t believe it.”