Gazprombank, the banking arm of Russian energy giant Gazprom, saw its January-March 2011 net profit increase 31 percent year-on-year to 30.988 billion rubles ($1.07 billion) to IFRS, Gazprom said in a statement on Tuesday. Gazprombank assets rose to 2.016 trillion rubles in the first quarter of 2011 compared to 1.759 trillion rubles the first quarter of 2010. Liabilities edged up to 1.776 trillion rubles in January-March 2011 from 1.539 trillion rubles, year-on-year, the bank said.