Complex sentence: The suicide bomber, Salman Ramadan Abedi, was a 22-year-old British citizen non-practicing Sunni Muslim and was known to British security services after a Muslim community worker reported him.
Split into simpler sentences: The suicide bomber, Salman Ramadan Abedi, was a 22-year-old British citizen and non-practicing Sunni Muslim. He was known to British security services after a Muslim community worker reported him.