OSLO, July 28 (Reuters) - Sweden's Securitas reported on Friday a bigger than expected rise in second-quarter core profit and said its high-margin technology and solutions business grew by 12%.

Operating profit before amortisation (EBITA) at the security services group rose to 2.62 billion Swedish crowns ($248.9 million) from a year-ago 1.76 billion, beating the average analyst forecast of 2.39 billion in a company-provided poll. ($1 = 10.5251 Swedish crowns) (Reporting by Terje Solsvik; editing by David Evans)