The Mexican national accused of murdering college student Mollie 
Tibbetts in Iowa last month lived in the United States illegally 
for several years -- and worked for a farm that used Social 
Security Administration data in part to vet potential employees, 
according to officials there.

However, Yarrabee Farms co-owner and manager Dane Lang clarified 
Wednesday afternoon that the farm did not use a federal E-Verify 
check on suspect Cristhian Rivera, despite the company's claim 
earlier in the day that it did.

Lang said Rivera provided a state-issued photo identification 
and social security card.