Restaurant chain P.F. Chang’s frozen meals were recalled Tuesday due to possible metal fragments in the sauce. On Wednesday, the company expanded its voluntary recall and revealed the source of metal.

According to a news release by ConAgra Foods, sugar from a supplier may contain small metal fragments (2-9mm). The sugar was used in the sauces for eight P.F. Chang’s Home Menu brand products. On July 7, while dispensing sugar from a supplier for the products, a ConAgra employee observed metal fragments. On July 14, the supplier notified ConAgra of additional production lots of sugar that were impacted.

The expanded recall includes an additional 191,791 pounds of products, the Times Record reported. The original recall included 3,806 pounds of product.

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The company hasn’t received any reports of adverse reactions or injuries due to consumption of the recalled products. Foodborne foreign objects that are not hard and sharp, and are less than or equal to 7 millimeters in length may cause minor injury, such as temporary reflexive chocking and irritation of the gastrointestinal system, according to the news release.

The modified recall now includes the following products:

• 22-oz. plastic bagged meal packages of "P.F. Chang's Home Menu Signature Spicy Chicken" with "Use By" date of 6/08/17 and case code 5006616500.

• 22-oz. plastic bagged meal packages of "P.F. Chang's Home Menu Mongolian Style Beef" with "Use By" date of 6/17/17 and case code 5006617400.

• 22-oz. plastic bagged meal packages of "P.F. Chang's Home Menu Mongolian Style Beef" with "Use By" date of 6/1/17 and case code 5006615800.

• 22-oz. plastic bagged meal packages of "P.F. Chang's Home Menu Beef with Broccoli" with "Use By" date of 6/4/17 and case code 5006616100.

• 22-oz. plastic bagged meal packages of "P.F. Chang's Home Menu Sweet & Sour Chicken" with "Use By" date of 6/3/17 and case code 5006616000.

• 22-oz. plastic bagged meal packages of "P.F. Chang's Home Menu General Chang's Chicken" with "Use By" date of 6/3/17 and case code 5006616000.

• 22-oz. plastic bagged meal packages of "P.F. Chang's Home Menu Garlic Chicken with Dan Dan Noodles" with "Use By" date of 6/8/17 and case code 5006616500.

• 22-oz. plastic bagged meal packages of "P.F. Chang's Home Menu Grilled Chicken Teriyaki with Lo Mein Noodles" with "Use By" date of 6/10/17 and case code 5006616700.

• 22-oz. plastic bagged meal packages of "P.F. Chang's Home Menu Signature Spicy Chicken" with "Use By" date of 5/26/17 and case code 5006615200.

Customers who have purchased the affected products should discard any unused portions and may return impacted product for a full refund. For additional information, contact ConAgra at 800-252-0634 9 a.m. to 7 p.m. CMT Monday through Friday.