Prepared beef used in Taco Bell tacos and burritos was recalled with concern that it may be contaminated with metal shavings, federal regulators announced on Monday.
Meat products made by Kenosha Beef International were shipped to five distribution centers, then to Taco Bell locations across the country, according to a news release from the Department of Agriculture's Food and Food Inspection Service.
Authorities say the amount of beef pulled from an Ohio-based producer is unclear. But in its own message, the fast food company said the withdrawal had affected 2.3 million pounds of beef.
Taco Bell says the product has been removed from all affected restaurants in 21 states in the Midwest, Southeast and Northeast.
The products in question were manufactured between September 20 and October 4. It is unclear when they were sent.
The problem was first discovered on Saturday when Taco Bell informed regulators it had received three customer complaints.  There are no confirmed reports of people suffering from side effects after eating beef, says the USDA.
Anyone affected by injury or illness should contact their healthcare provider, officials said.