HADDON HEIGHTS -- A borough man arrested Thursday is facing sexual assault and stalking charges as a result of alleged relations with a teenager at the time, according to the Camden County Prosecutor's Office.

Joseph F. Blake, 25, is charged with two counts each of sexual assault, one count of endangering the welfare of a child and one count of stalking. Blake had been a former assistant swim coach at Haddon Glen Swim Club. Authorities said the victim in this case was a former swim team member.

According to the prosecutor's office, Blake's sexual relationship with the victim -- whose gender wasn't disclosed -- occurred between 2011 and 2013. At that time, the victim was 15 to 17 years old.

The swim club could not be reached for comment Friday afternoon, as a recorded message indicates it remains closed for the season. However, the club's website lists a "Joe Blake" under the facility's "swim team coaches" page and identified the man as being in his fourth year of coaching at the Walnut Avenue site.

A prosecutor's office spokesman did not immediately respond to a request for comment regarding Blake's employment status with the swim club.

Blake's bail was set at $250,000, authorities said.

Greg Adomaitis may be reached at gadomaitis@njadvancemedia.com. Follow him on Twitter @GregAdomaitis. Find the South Jersey Times on Facebook.