The original "I Believe in Nashville" mural in 12South has been vandalized again, a little over four months after it was defaced with black tar. A reward is being offered for information leading to the arrest of the person responsible for the crime.

According to Metro police, the male suspect eventually put on a mask and displayed his middle finger to a surveillance camera, but was recorded without a disguise prior to that. He had at least two lookouts with him, police say.

The mural is located at 2700 12th Ave. S. on the building occupied by 12South Dental Studio next to Edley’s Bar-B-Que in the bustling 12South neighborhood.

The suspect painted a globe over the three stars on the mural, which represent Tennessee's three divisions, and painted "Global Warming" over the word "Nashville."

The building's landlord, Andy Howell of C.A. Howell and Company, and his brothers are offering a $1,000 reward for information leading to the vandal's arrest — $500 to the person who identifies the vandal and $500 to Waverly Belmont Elementary's school lunch program.

On March 15, Howell found a large portion of the mural covered in black tar.

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“It’s unfortunate. It’s such a positive thing and so many people have enjoyed it. It’s just a bummer,” Howell said back in March.

Nashville native Adrien Saporiti painted the mural in 2012 to showcase his love of the city.

Investigators are working to identify the man shown in surveillance images, as well as the others believed to be accomplices.

Anyone with information on their identities is asked to contact Crime Stoppers at 615-742-7463. Callers can remain anonymous and may qualify for a cash reward.

Reach Natalie Neysa Alund at nalund@tennessean.com and follow her on Twitter @nataliealund.