International Resources Group, a provider of services to the U.S. Agency for International Development and with contracts around the world, is now part of RTP-based RTI International.

IRG, which launched in 1978, has operated in more than 120 companies.

Engility Holdings, which acquired the Washington, D.C.-based firm, in 2013, sold it to RTI in a deal that has formally closed, RTI said on Monday.

Financial terms were not disclosed.

Areas of focus for RGI include:

  • Energy
  • Learning
  • Institutional Strengthening
  • Climate
  • Natural Resources
  • Biodiversity
  • Water
  • Agriculture

“Combining the expertise and capabilities of IRG with those of RTI enables us to better address critical challenges facing our clients and the international development community,” said Wayne Holdenn CEO of RTI, in a statement. “We are extremely excited to welcome the IRG staff into the RTI family.”

RTI says the deal expands its scope of capabilities as well as its geographic footprint into such countries as Rwanda and Ukraine.

“IRG … brings new capabilities to RTI in USAID management and technical training and disaster preparedness,” RTI noted.

For the time being, IRG will operate as a separate subsidiary, according to the announcement.

“RTI has a strong reputation for outstanding performance and technical services in the international development market,” said Kirk Dye, Engility’s senior vice president. “We look forward to supporting RTI to ensure a smooth transition for employees and the USAID clients.”

RTI is an independent nonprofit institute with more than 4,700 employees spread across more than 75 countries.