DHAKA (Reuters) - The United States believes that militancy remains a concern for Bangladesh, US Ambassador James F Moriarty said on Sunday, after a former prime minister said there was no such threat. The recent seizure of weapons in Bhola and continued arrests of JMB (Jamaat-ul-Mujahideen Bangladesh) members throughout the country demonstrates terrorism remains a concern, Moriarty told reporters. Bangladeshs former prime minister Begum Khaleda Zia told a rally on Saturday there were no active militants in the country, saying her government had routed Islamist groups in a countrywide crackdown when she was in power between 2001-06. Addressing a May Day rally on Friday, Prime Minister Sheikh Hasina blamed Khaledas government for inaction against religious groups. Despite a decrease in violence in Iraq, recent attacks in India, Pakistan and other countries demonstrated the world had a long way to go before it got rid of terrorism, Moriarty said.