The planned merger of Melrose-based Secure Credit Union into Chelsea-based Metro Credit Union was officially completed late last week.

Secure Credit Union staff will continue to serve members at the branch at 138 Main St. in Melrose. The location marks the thirteenth branch for Metro, which also opened new branches in Boston and Salem this year.

"We are very pleased to have chosen Metro as our strategic partner. Secure members will significantly benefit from the merger through greater convenience and access to a broader selection of banking products and services," Secure Chairman Peter Cucinotta said in a statement. "We believe this combination will produce great results for our members and employees, and look forward to becoming part of the Metro team."

The combined institution now has assets of roughly $900 million, according to a statement.

"We are pleased to welcome the Secure Credit Union members to Metro Credit Union and to become a part of the Melrose community," said Robert M. Cashman, president and CEO of Metro Credit Union. "As one of the largest credit unions in Massachusetts, Metro is known for the superior service and financial expertise we provide to our members. Our commitment is to create tangible economic value for our members, and we are looking forward to the opportunity to serve the members of Secure Credit Union."