Police in Michigan and the FBI say they’ve got a man in custody who admitted to spraying a mixture of mouse poison, hand cleaner, and water on produce and other unpackaged food at several grocery stores.

Earlier this week, officials said they were looking for a man caught on camera sprinkling a mysterious liquid on hot and cold food salad bars at an Ann Arbor, MI Whole Foods. Police have a man in custody now who they say admitted to contaminating food at that store — along with several other Whole Foods, Walmart, Meijer, Kroger, and Plum Market shops over the last few weeks, CBS Detroit reports.

The FBI said in a news release (via CBS News) that an investigation is ongoing to determine if other stores the suspect visited were affected.

All stores potentially involved have been informed of what went down, and law enforcement took additional samples from various locations for further testing.

No injuries or illnesses have been reported in connection with the incident, and state health officials said they’re not anticipating adverse health effects for anyone who consumed the mixture. Just in case, however, customers should exercise caution.

“[We] encourage consumers to dispose of any foods purchased from salad bars, olive bars and ready-to-eat hot and cold food areas from these stores between mid-March and the end of April,” said a spokesperson for the Michigan departments of Agriculture and Rural Development and Health and Human Services.

Here’s a list of all the stores that the FBI thinks may potentially have been targeted, based on the agency’s investigation:

Busch’s
2240 S Main Street
Ann Arbor, MI

Cupcake Station
116 E Liberty
Ann Arbor, MI

Family Fare
2026 North Saginaw
Midland, MI

Kroger
3838 Richfield Road
Flint, MI

Meijer, #108
7300 Eastman Ave
Midland, MI

Meijer, #64
3145 Ann Arbor-Saline
Ann Arbor, MI

Meijer, #213
9515 Birch Run Rd
Birch Run, MI

Millers Mini Mart
3001 Bay City Rd
Midland, MI

Plum Market
375 North Maple
Ann Arbor, MI

Target
2000 Waters Road
Ann Arbor, MI

Tsai Grocery
3115 Oak Valley Drive
Ann Arbor, MI

Walmart
910 Joe Mann Blvd
Midland, MI

Walmart
7000 E Michigan Ave
Saline, MI

Whole Foods
990 W Eisenhower Pkwy
Ann Arbor, MI

Whole Foods
3135 Washtenaw Ave
Ann Arbor, MI

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