Vandals paint graffiti at Sixth Floor Museum in Dallas

DALLAS There has been an act of vandalism at one of the most historic places in North Texas, CBS station KTVT reports.

Graffiti found at the Sixth Floor Museum has officials discussing security for next month's commemoration of the 50th anniversary of the assassination of President John F. Kennedy.

Someone tagged several benches outside the museum, located in an early 20th-century warehouse formerly known as the Texas School Book Depository. On Nov. 22, 1963, assassin Lee Harvey Oswald shot the president from a window on the sixth floor.

The vandalism at the museum comes just as officials were ready to show off a recently completed renovation that coincides with the important anniversary.

A new covered walkway is one of several changes that visitors will notice at the Sixth Floor Museum in downtown Dallas.

Someone added the graffiti on the wooden benches on Tuesday.

"It's clearly very disrespectful and the museum is really nice," visitor Sarah Kamrad said. "I just spent about an hour and a half here."

The museum's director, Nicola Longwood, said: "It's real sad to see our new furniture marred."

According to Longwood, vandals defaced the new facade that's part of a recent museum makeover. It's a makeover that includes a redesigned lobby with more security measures along with fewer entrances and exits.

"We're just moving forward as we do every day, trying to give our guests a good experience," Longwood said.

Crime is a concern as the 50th anniversary of the Kennedy assassination approaches. Extra security is planned around Dealey Plaza.

Meanwhile, museum officials believe their new renovations will be sufficient for the large crowds that are expected.

Museum officials won't say whether security cameras captured the vandalism act. The benches can be repaired, but it will cost about $500.