Sri Lankan President Gotabaya Rajapaksa sent in his resignation letter from Singapore on Thursday, but the parliamentary speaker has delayed making a formal announcement until an official verification process is completed. The speaker’s office released a statement saying Rajapaksa’s resignation letter had been handed over to Sri Lanka’s High Commission in Singapore. Rajapaksa headed there after initially fleeing to Maldives on Wednesday, after weeks of unrest sparked by extreme economic turmoil on the island nation. The speaker has called for the original letter of resignation to be sent to th…