Rocky Mount, N.C. — A company that makes injectible medicines plans to expand its troubled Nash County operations, creating 200 jobs and investing at least $85 million over the next three years, officials said Thursday.

Hospira's investment in the Rocky Mount plant could grow to as much as $270 million over the next 10 years.

Part of the investment is to modernize the plant, which has been plagued with production problems for two years. The U.S. Food and Drug Administration has warned Hospira about quality control issues at the plant.

The average salary for the new jobs will be $51,780, plus benefits. Nash County's average annual wage is $34,112.

State officials approved a $645,000 grant from the One North Carolina Fund for Hospira. The fund provides financial assistance to attract business projects to the state. Companies receive no money up front and must meet job and investment targets to obtain the funds.

Nash County and the city of Rocky Mount also promised up to $12.5 million in incentives for the company over the next 10 years.