A U.S. Park Police officer stands guard next to the statue of Abraham Lincoln at the memorial in Washington, Friday, July 26, 2013, after the memorial was closed to visitors after someone splattered green paint on the statue and the floor area. Police say the apparent vandalism was discovered early Friday morning. No words, letters or symbols were visible in the paint. This handout photo provided by the National Park Service shows green paint splatter on the Lincoln Memorial in Washington, Friday, July 26, 2013. The Lincoln Memorial was temporarily closed Friday after someone splattered a splash of green paint on the statue. The apparent vandalism was discovered around 1:30 a.m. Friday on the statue, the pedestal and the floor, U.S. Park Police said. AP Photo/National Park Service Splattered green paint is seen on the right shoe area of the Abraham Lincoln statue at the Lincoln Memorial in Washington, Friday, July 26, 2013. Green paint is splattered on the base of the statue of Abraham Lincoln at the Lincoln Memorial in Washington, Friday, July 26, 2013. Police say the apparent vandalism was discovered early Friday morning with no words, letters or symbols visible in the paint. Tourists and reporters stand behind a police barrier as the central hall of the Lincoln Memorial in Washington, Friday, July 26, 2013, as it was closed for cleaning after someone splattered green paint on the statue of the 16th president and the floor area. WASHINGTON (AP) - Someone splattered green paint on the Lincoln Memorial early Friday, but the statue of the 16th president was reopened by nightfall after the paint was washed away. The marble Lincoln statute had green paint on its shin, coattail, chair and base, as well as paint on the floor of the memorial building. Capt. Steven Booker said the paint spill "appears intentional based off of the splatter." Police were reviewing security camera footage to try to identify possible suspects, he said. No suspects had been identified by Friday afternoon. Police officials said they would not release the security footage because the investigation is ongoing. The memorial chamber was closed all day to allow a National Park Service crew to finish cleaning up the paint. Workers spent hours using pressurized hoses and a chemical paint remover to try to wash away the paint. National Park Service spokeswoman Carol Johnson said the memorial will be returned to the condition it was in before the vandalism. She said the work was going well by late Friday. "It is not permanent damage," she said. Our historic preservation crew knows exactly what they need to do. The memorial, one of the most popular sites on the National Mall, was dedicated in 1922 to President Abraham Lincoln. The building was designed by Henry Bacon, and Daniel French sculpted the statue of Lincoln. It sits at the opposite end of the National Mall from the Capitol, facing the Washington Monument. The memorial has served as a symbol of equality and reunification after the Civil War. It was the site of the Rev. Martin Luther King Jr.'s March on Washington 50 years ago, along with other historic moments. The Lincoln Memorial is generally open around the clock to visitors. Park rangers leave their posts about 10 p.m. and return about 9 a.m. daily. U.S. Park Police, however, maintain 24-hour patrols at the memorial, said Lt. Pamela Smith. Lincoln Memorial: http://www.nps.gov/linc