MORAGA — Leaders here will soon be looking for a new town manager.

Mike Segrest, who holds the job, said he will step down due to issues relating to the health of his wife, Debbie.

His departure date has not been decided, he said.

Segrest's resignation will set the town looking for its fourth manager since 2008.

The council will begin discussing the search for his replacement at one of its June meetings, said Mayor Ken Chew.

Segrest said his wife has suffered from asthma-related upper respiratory problems since moving to California from Colorado, where he had been the manager of a small ski resort town before retiring in 2006.

Speculation over whether Segrest would leave began two weeks ago when reports surfaced that he was a finalist for the town manager position in Telluride, Colo.

Segrest and Telluride officials confirmed he was a candidate. The position went to another applicant.

Segrest said he did not tell the Town Council he had applied for the job because he did not want to create unnecessary anxiety.

Council members said they supported Segrest's decision and will be sad to see him leave.

"The very real concerns over Debbie's health are unfortunate, but we all understand that Mike needed to take steps to take care of Debbie by seeking employment outside the area," said Councilman Dave Trotter.

"The council is really supportive of Mike, and we're really very happy that he has been here and really glad that he came here," said Vice Mayor Karen Mendonca. "We're just really sorry that he won't be able to stay as long as he would've loved."

Segrest was appointed in February 2009 to replace interim Town Manager Jay Tashiro, who had come out of retirement to take over for Phil Vince during the search for Vince's replacement.

Vince had stepped down in June 2008 to take the Martinez city manager job.

Segrest said he was thankful for the council's support and that he has enjoyed his short stay in Moraga.

"I've very much appreciated the people in the community who have been very warm and kind to me and very supportive, and I'm going to miss the friends that we've made," he said.

"It's one of those things that I didn't anticipate, didn't plan for."

Contact Jonathan Morales at 925-943-8048. Follow him at Twitter.com/sosaysjonathan.