Qatar has been providing 31 Bahraini citizens with accommodation in a quarantine hotel in Doha after they arrived in the country on a Qatar Airways flight from Iran.
Bahrain is to put on trial 11 people accused of attempting to murder a police officer and being part of a "terrorist" group, prosecutors said on Wednesday.
Bahrain has charged four US journalists with taking part in an illegal gathering but they were planning to leave the country after being released, their lawyer said.
Bahraini authorities have arrested four foreigners, including journalists, during protests marking the fifth anniversary of a Shia-led uprising in the kingdom, police said.
Police in Bahrain used tear gas to disperse protesters demonstrating over Saudi Arabia's execution of a prominent Shia cleric, witnesses said.