WATERLOO, Ill. (KMOV.com) -- A St. Louis Metropolitan Police Lieutenant is under investigation for his alleged online activity.

Some people are calling the officer a racist after seeing an insensitive social media post about a Mexican restaurant.

"This is my home, I've got to protect it because this is where my family eats from."

Jose Romero's restaurant, Casa Romero on Market Street in Waterloo, Illinois, has been closed for renovations.

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Last Wednesday, St. Louis Metropolitan Police Lieutenant Jerry Foster allegedly posted the following comment on Facebook: "I'm not sure what the hell is going on in our country these days. I just drove by an authentic Mexican restaurant in town; and there were white guys putting on a new roof, cutting the grass and doing landscaping."

"I guess that's the way he thinks, and that's sad," said Romero. "I don't lose any sleep over this. Simple as that."

Although there's no mention of Romero's restaurant, the post's location stamp shows Waterloo, Illinois, where construction is underway at Casa Romero.

"It's no issue to me, so I didn't understand why somebody would post something like that," said Mike Lasky.

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Mike Lasky's been doing work on Romero's restaurant for three months.

Lasky can't believe a police officer would put something so insensitive online.

"It's disturbing and I hate to see it, but it just shows that it does exist and it's sad," said Lasky

News 4 found previous controversial posts tied to Lt. Foster's account, including a 2016 comment where he allegedly called liberals the "Democratic Criminal Party" after Michael Brown's mother, Lezley McSpadden, was invited to speak at the party's national convention.

No matter what's mentioned online, Romero said he'll continue to stay focused on his restaurant.

"All I can do is move on and keep making this place bigger and nicer for the community," said Romero. "So, that's what we're working on right now."

A SLMPD representative sent a statement regarding Lt. Foster's alleged posts. It reads, "We are aware of the posts. The views expressed in the posts in no way represent the views of the Metropolitan Police Department, City of St. Louis. The matter is currently under investigation."

News 4 also reached out to St. Louis Public Safety Director Jimmie Edwards.

Edwards said he believes social media rules should be put in place for police.

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