What to know about the Boston Marathon bombings

Massachusetts newspaper The Boston Globe has reported that an employee of the FBI has been placed on administrative leave over the bombings.

The Boston Herald reports that an FBI agent was involved in an incident on the day of the bombing that caused two explosions, but the agency has not released a statement.

The newspaper says the FBI is investigating the employee’s actions. 

Boston Mayor Marty Walsh has called for an independent investigation into the events surrounding the bombings, and he has asked the FBI to open an investigation into possible bias against Boston Mayor and State Representative Ed Markey.