Updated

Two co-workers who discovered this summer that they are long-lost brothers and who reunited this week with their two half sisters have a new surprise — a half brother has surfaced.

George Pomeroy of Biddeford, Maine, told WCSH-TV on Thursday that he shares a father with Randy Joubert and Gary Nisbet. He said the men lived with his family as youngsters before they were taken by the state and adopted by different families about 35 years ago.

Joubert told The Associated Press that Pomeroy presented documents that prove their relationship. He said Pomeroy was the last sibling on his "search list," so any others who might come forward would be more closely scrutinized.

Nisbet spent seven years as a furniture mover for a local bedding retailer when he was joined by new colleague Joubert, who looked so much like him that customers asked whether they were brothers. After checking their original birth certificates, they realized they were.

After the men's story was publicized, half-sister Joanne Campbell showed up. While appearing with her brothers on the "Today" television show on Tuesday, Campbell said a long-lost sister was still unaccounted for. Kathleen Cooper called NBC after watching the show from her home in Sarasota, Florida, and appeared on the show Wednesday for a surprise reunion with her siblings.

The co-worker brothers share a mother with the women; the sisters aren't related to Pomeroy.

The siblings have plans to get together soon, Joubert said.