Updated: 4:25 p.m.

Rep. Todd Platts (R-Pa.) will announce this afternoon that he will not seek a seventh term in Congress, according to Republicans with knowledge of his decision.

Platts’ office sent out an advisory saying he planned to make a “major political announcement” this afternoon. A Platts spokesman did not immediately return a request for comment, but a GOP source told Roll Call he will say that he’s retiring, citing family obligations.

“He just called me about half an hour ago to say that he was going to be announcing his retirement at that press conference at 3:45,” said Pennsylvania Republican Party Central Caucus Chairman Dick Stewart.

This isn’t the first time Platts has indicated he might be ready to finish his Congressional career. He toyed with leaving Congress a few years ago when he applied for the top post at the Government Accountability Office.

Pennsylvania Republicans passed a new Congressional map in December but kept Platts’ district mostly intact. He would have sought re-election in the 4th district, a solidly GOP seat. The GOP source said redistricting is not a reason the 49-year-old lawmaker is not seeking re-election.

Republicans speculated at least one local GOP official could run for the open seat, state Rep. Scott Perry.

Platts’ announcement marks the sixth House Republican to retire without seeking another office, compared with nine House Democrats who are retiring this year. Another 15 Members are running for Senate or other office. To see which Members are leaving, check out Roll Call’s Casualty List.

UPDATE: Platts released a lengthy statement explaining his decision not to seek another term.

“I have long believed in the importance of term limits and have sponsored twelve-year term limit legislation each term since first being elected to Congress,” Platts said. “As such, I will not be seeking re-election to Congress and will leave office at the end of this year — my twelfth year as Congressman for the 19th District.”