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EVANSTON, Ill. - Police in Illinois are looking for clues after a small bomb exploded inside the women's restroom at a Target store in Evanston.

Officials told WGN that no one was inside the bathroom when the bomb went off.

Now, detectives are looking to see if the bomb may have been linked to Target's policy that allows transgender people to use the bathroom of their choice.

However, at this time, officials say there is no indication the incident is related to any of Target's policies.

Authorities say a 44-year-old female person of interest was taken into custody.

So far, no charges have been filed.

"The safety and security of our guests and team members is of the utmost importance to Target. We have zero tolerance for any illegal or unsafe behavior in our stores. At this time, we’re unaware of what prompted this incident. We can confirm there were no related guest or team member injuries, and there was no damage to Target property as a result. We are partnering with local law enforcement on this incident. Because this incident is currently under investigation, we aren’t able to provide additional details," a statement from Target read.

Earlier this year, Target’s CEO Brian Cornell spoke publicly about the store’s new bathroom policy, which allows any transgender individual shopping at Target to be able to use whichever bathroom they believe corresponds with their gender identity.

Target said their decision to change their policy stands with their long history of “embracing diversity and inclusion.”

Their policy has received backlash from Christian groups like the American Family Association, who started a petition against the retailer that already has over 1.2 million signatures.