A security guard at the U.S. Embassy in Tel Aviv was slightly injured in an attacked by an Israeli man, Israeli police said Tuesday. The man entered the embassy with an axe and knife and attacked the guard before other security guards fired warning shots and overpowered the suspect, Israel Radio said. The man was taken for questioning by police to determine the motive for the attack, the radio said. Police said the man from Bat Yam is apparently mentally unstable, the radio said. The embassy released a statement saying the situation was under control, the radio report said.