A coalition government was established in 1957 between the monarchists and communists. In May 1959 two Pathet Lao battalions which had been selected for integration into the Royal Lao Army (RLA) were surrounded by RLA troops who attempted to disarm them, part of one battalion was captured but the remainder fled to North Vietnam. Then in July 1959 Lao police arrested 16 Neo Lao Hak Sat members, including seven who had been elected to the National Assembly, on charges of treason. These actions brought about a resumption of fighting.