The Obama administration said Friday it will take new steps to address border security, after a recent surge in the number of unaccompanied minors crossing into the U.S.

Between Oct. 1 and June 15, 52,000 minors have been apprehended, according to administration officials; 39,000 adults with children have also been detained.

Officials will pursue additional detention space, and will spend $9.6 million to help Central American governments reintegrate their citizens. The Departments of Justice and Homeland Security will also work together to increase enforcement and expedite removal proceedings.

Before Friday's announcement, House Speaker John Boehner sent a letter to President Obama calling on the White House to deploy the National Guard to help with the border crisis. Administration officials plan to review that letter, but says existing departments are already well-equipped to handle the surge.