An illegal immigrant charged in a fatal Rowan County crash may have been convicted of several crimes in North Carolina years before federal officials discovered he was back in the United States.

Investigators were examining jail records from five North Carolina counties Friday to determine if the same man used several aliases to avoid being detected by immigration officials. The arrests were in Rowan, Forsyth, Montgomery, Duplin, and Johnston counties.

Carlos Alfonso Guillen Martinez, 33, is charged with second degree murder in the Feb. 6 crash that killed Leeanna Newman, 20, and her unborn child.

Richard Rocha, a spokesperson for U.S. Immigration and Customs Enforcement, told WCNC Martinez is from El Salvador and had been deported twice. He said Martinez was first deported from Los Angeles in 1997 and from Houston in 1998. Rocha said Martinez told immigration agents he paid a smuggler $1500 to bring him to Charlotte in 2002.

Rowan County Sheriffs Lt. Michael Agner said Martinez had been jailed twice in the county under two different aliases in 2004. Jail records indicate David Ortiz and Insolito Pineda, those two aliases, listed the same home address and date of birth.

Agner told WCNC it appears the jail did not fingerprint the inmate because he was charged with misdemeanor crimes. North Carolina law requires jails to fingerprint suspected felons. The fingerprint samples are submitted to federal agents who check a database which includes known illegal immigrants.