A controversial statue in Southern California depicting a hanbok-wearing Korean girl who symbolizes "comfort women" has been defaced for the second time this summer, according to police.

A suspect vandalized the copper statue using a black marker and knocked over surrounding potted plants on Monday morning in an incident that is currently under investigation, said a Glendale Police Department spokesman.

"Somebody approached the statue with a black marker and scribbled," said Sgt. Dan Suttles, adding that the suspect did not write anything legible.