U.S. President Donald Trump's top official at U.S. Immigration and Customs Enforcement has been reassigned as arrests and deportations have lagged expectations, a senior Trump official and two other sources familiar with the matter said on Friday.

The top official in charge of carrying out President Donald Trump’s mass deportations agenda has been reassigned amid concerns that the deportation effort isn’t moving quickly enough.

The demotion of top two officials in ICE’s enforcement division comes as officers scramble to ramp up the number of immigration arrests and deportations.