Global Infrastructure Partners (GIP), the infrastructure focused private-equity firm run by former Credit Suisse banking head Adebayo Ogunlesi, is seeking to raise $2.5 billion for an infrastructure debt investment fund.

GIP was sold to Lexington Partners Inc. last year as Credit Suisse sought to strengthen its capital base.

According to Bloomberg, Steve Cheng and Reiner Boehning, previously heads of global project finance at Credit Suisse, will manage the debut credit pool for New York-based GIP.

The new fund will invest in loans tied to energy, transport, water, waste, greenfield and brownfield assets.

GIP has declined to comment on the fundraising process.

Global Infrastructure Partners (GIP) is an independent infrastructure fund manager that invests worldwide in infrastructure assets and businesses in both OECD and select emerging market countries. GIP targets investments in single assets and portfolios of assets and companies in power and utilities, natural resources infrastructure, air transport infrastructure, seaports, freight railroad, water distribution and treatment and waste management.

GIP has offices in New York and London, with an affiliate in Sydney and portfolio operations headquarters in Stamford, Connecticut.

GIP manages in excess of $18 billion for their investors. Their thirteen portfolio companies have combined annual revenues of over $4.5 billion and employ more than 12,000 people.

GIP announced in mid June that it has sold 50% general partner interest and 55.1 million limited partner units in Oklahoma city-based Access Midstream Partners L.P. to Williams.