The attorney general's office of Guatemala is urging embattled President Otto Perez Molina to step down.

The office says in a statement posted on its website late Wednesday that Perez Molina should "submit his resignation, to prevent ungovernability."

Calls have been mounting for Perez Molina's resignation in the face of a corruption scandal that has resulted in the jailing of his former vice president. Many members of his cabinet already have quit.

The government comptrollers' office also issued a statement saying Perez Molina should resign "to avoid greater social unrest that could have unpredictable consequences."

Protests and strikes are expected Thursday. Business, religious and student groups are also calling on Perez Molina to resign.