Texas-based start-up Crimson Resources has secured funding by an investor group led by Fort Worth-based Vortus Investments to build up a portfolio of assets in the Eagle Ford shale and elsewhere.

Crimson said it is focused on acquiring, leasing and developing oil and natural gas assets in South Texas.

The company is led by president Frank Starr and executive vice president Tripp Rivers, who both started at Union Pacific Resources and have worked together for over two decades.