Occupy L.A. members filed a request for a temporary restraining order on Thursday that would prevent the Los Angeles Police Department from closing their City Hall encampment without notice, said Chief Deputy City Attorney William Carter.

According to Carter, the motion seeks to prevent the LAPD from shutting or removing parts of the encampment without 30 days notice. City attorneys plan to challenge the motion on Friday morning in L.A. Superior Court, he said.

"There's no legal basis for this," said Carter. "The LAPD needs to be able to go in if there's a public safety issue."

The Occupy L.A. group didn't appear to have an attorney and filed the motion themselves, according to Carter.