A senior FBI official told the House Homeland Security Committee Wednesday the recent drone sightings above New Jersey are "concerning," and said the agency is "actively investigating" the situation and trying to determine who is responsible.

The FBI allocates only about $500,000 of its $11 billion budget for counter-drone capabilities, a senior bureau official told House lawmakers Tuesday, who heard the agency still has not determined who is responsible for a series of drone incursions in New Jersey.