Forensic experts are examining an ax that Fotis Dulos borrowed from a friend about a month before his estranged wife, Jennifer Dulos, went missing, according to a report Wednesday.

Connecticut State Police investigators seized the ax during Dulos’ arrest Tuesday in Jennifer’s alleged kidnapping and murder, the Hartford Courant said.

A detective spotted the ax in Dulos’ garage, and it was sent to the state forensic laboratory for DNA analysis, sources familiar with the investigation told the Courant.

Dulos, 52, told the ax’s owner that he wanted to chop firewood in his backyard, and the unidentified pal later told detectives about loaning it out, the sources said.

It’s unclear if the ax was in Dulos’ garage when authorities searched his sprawling Farmington mansion in June, the Courant said.

Defense lawyer Norm Pattis downplayed the potential significance of the ax’s discovery, telling the Courant it wouldn’t likely have been left “in plain view for [police] to see if there was any evidentiary value to it.”

“But they can have at it,” he added.