HOMESTEAD (CBSMiami) – An armed man was shot and killed late Thursday night at a Homestead Chevron station after police got into a confrontation with a man who employees said was acting suspicious. It’s still not certain why the officer opened fire.

Shortly before 11 p.m. Thursday night police say an employee at the Chevron gas station at Campbell Drive and US 1 saw someone who appeared to be acting strangely, and the worried employee pushed the panic button for the store’s silent alarm.

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Miami Dade police spokesperson Detective Javier Baez said officers spotted the man, who was described only as having latin features, and an officer ordered the man to stop and show his hands.

Baez said shots were fired by the officer, but police are not sure what caused him to shoot. The man was killed by the police gunfire, and an investigation is underway.

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The clerk was not hurt, but the gas station is closed.

While it’s not certain what caused the clerk to get suspicious, employees told CBS4 that the man came in, asked for a painkiller, and then asked for his money back. The clerk reportedly noticed the man was carrying a gun, and that’s when the silent alarm button was pushed.

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The names of the suspect and the name of the officer who fired the shots were not immediately available.