PORTLAND — Police say they have identified no Maine victims of a longtime baseball and hockey coach charged last week with molesting boys in New Hampshire.

Robert Joubert, 58, of Manchester, N.H., who runs a youth baseball academy in York, was arrested in Concord, N.H. on Thursday on multiple felony charges of sexual assault of boys dating back to the 1980s.

In a news release, police said Joubert has been coaching youth baseball and hockey for 15 years. He runs the Seacoast Baseball Academy on Route 1 in York, which has been operating since 2008.

York police, who initiated the investigation, said they have found no Maine victims.

In March, York police said they received an e-mail from the mother of an alleged victim warning that Joubert was a “pedophile,” according to affidavits contained in the criminal complaints.

The affidavits detail interviews conducted by the FBI and Concord police with alleged victims, including one who told officers that Joubert abused him twice, once in 1984 and once in 1986, both times in Weare, N.H. when he was 9 and 11 years old.

Another victim, who said he was abused between 2001 and 2004, said Joubert offered him a new baseball glove in exchange for a sexual favor, according to the affidavit. He said he performed the favor but never received the glove.

Concord police said they have identified multiple possible victims and learned of multiple sexual assaults in Concord between 1995 and 2004.

They also said they may add charges in the future.

Some York parents of children who were coached by Joubert said they were surprised by the arrests.

Richard Labonte of York, whose 13-year-old son, Trevor, received pitching help from Joubert at the York academy during the past three winters, said Joubert definitely helped his son improve his baseball skills.

“I was floored, “ Labonte said of the accusations.

According to his website, Joubert has been a lead instructor at baseball camps and clinics in Maine, New Hampshire, Massachusetts and New York. He has been a pitching, catching and hitting instructor over the course of the past 11 years at the Concord Sport Center, USA Training Centers, HomeRun USA and the Capital City Baseball Academy and Training Center.

On his website, he said he was once offered a minor-league contract by the Montreal Expos. He is wearing Expos paraphernalia in several of the photos on his website.

Jobert has also coached New Hampshire AAU baseball teams, and kids ranging from T-Ball through college, his website says.