The co-owner of a Queens auto body shop was found dead in a pool of blood inside his business Monday afternoon, authorities and sources said. 

The 65-year-old man was lying unconscious and unresponsive next to a power tool inside Mekniko Autoworks on Cross Island Parkway near 149th Street in Whitestone when his brother found him around 3 p.m. and called 911, according to cops and sources. 

He had visible cuts on his neck and elbow, and blood pooled around him, authorities and sources said. 

The man – who was not immediately identified by police – was pronounced dead at the scene by EMS workers. 

The shop was closed at the time of the grisly discovery, sources said. 

It was not immediately clear whether criminality was suspected, and the city medical examiner’s office will officially determine how he died.

A man who answered the door at the victim’s house Tuesday afternoon said “no comment” and shut the door. 

Meanwhile, a tiny makeshift vigil popped up outside the auto repair shop Tuesday.

A toy Shelby car was placed outside the business with the message “Rest in peace, brother. Always love you. Miss u,” next to a bouquet of flowers.

“He was a great guy,” said one customer driving by the scene. 

“They called him the mayor of Whitestone,” added another patron in the same car. 

A passerby who grew up with the auto worker in Corona, Queens, remembered him fondly.

“He would help anybody – him and his brother,” said the man, who identified himself as Sal. “Any foreign car you had, these guys could figure it out. What a shame.

“He was a sweetheart, that’s all I can say,” he added. “He would help you anyway he can. If you didn’t have the money, come back. That kinda guy.”