New Castle County police say 34-year-old Daniel Simmons faces four counts of fourth-degree rape. Simmons is a deputy attorney general assigned to the county's Misdemeanor Trial Unit.
Police say Simmons met the boy through a social media app called Grindr and not during the performance of his public duties.
The attorney general's office says in a statement that Simmons has been placed on administrative leave. The office approved warrants for Simmons' arrest on Friday. Attorney General Beau Biden did not make any comments.
Simmons did not immediately return a message left at his home on Saturday. It was not clear whether he had an attorney.
Investigators are asking that any other victims to please come forward and contact the New Castle County Police Department at 395-8110 (ATTN: Detective E. Sherkey).