A bipartisan group of lawmakers in the House of Representatives has reached an immigration deal "in principle."

Rep. Mario Diaz-Balart (R-Fla.) tweeted Thursday afternoon:

A senior House GOP leadership aide confirmed the outline of a deal, but did not provide any details of the agreement. Neither did lawmakers coming out of a closed-door meeting on Capitol Hill, according to reports.

The group of eight lawmakers, who have met on and off for years, are providing a counterpoint in the House to the "Gang of Eight" legislation produced by the Senate.

Just this morning, House Speaker John A. Boehner (R-Ohio) expressed concern that the reform effort in the House had stalled. Disagreements over health care for immigrants and  an agricultural guest-worker program had stymied the effort for weeks.

Paul Kane contributed to this report.