HARTFORD, Conn. — Connecticut Attorney General George Jepsen announced Monday he won’t seek a third term in 2018, saying he wants to pursue different challenges but not a run for governor next year.

The Democrat acknowledged he doesn’t know what his future holds.

“I turned 63 last week. Next year I’ll be 64. At 64, I’m still young enough to write a new and different chapter on life and look for other opportunities,” Jepsen said, adding how he believes those opportunities will be greater and more varied next year, rather than waiting until after he served another four-year term.

He said the decision not to run for re-election was a family one, completed over the Thanksgiving weekend.

“The decision feels right in my gut,” Jepsen told reporters while sitting next to his wife, Diana Sousa, in his Hartford office.

Asked if he might run for governor next year, he said, “for this cycle, no.” He then quickly added how he’d be “surprised” if he would run in the following gubernatorial cycle, either. He was an unsuccessful lieutenant governor candidate in 2002.

Various Democrats and Republicans are expected to run for attorney general now that there’s an open seat. Democratic Rep. William Tong, of Stamford, the House chairman of the legislature’s Judiciary Committee, said he will announce his plans on Tuesday.

Jepsen credited his team at the Office of the Attorney General with having had “a remarkable success rate” over the past seven years, calling staff “superb public servants in the truest sense.”

Jepsen, a former state senator from Stamford, a former majority leader of the Connecticut Senate and a former chairman of the Connecticut Democratic Party, began serving as attorney general in 2011. He replaced then-Attorney General Richard Blumenthal, a longtime friend and fellow Democrat who went on to become a U.S. senator.

Under Jepsen’s leadership, his office has played a major role in various multistate cases with national ramifications, including an ongoing federal antitrust lawsuit against makers of generic drugs. Over the past year, he has been part of lawsuits attempting to block actions by President Donald Trump’s administration. In October, for example, Connecticut joined nearly 20 other states in trying to prevent the Republican president from stopping federal payments that lower health insurance deductibles and co-pays for millions of Americans with modest incomes.

Jepsen is the immediate past president of the National Association of Attorneys General.