Turlock police want to make sure a father and his 21-month-old daughter are OK after the father left the baby's mother at the Lander Avenue am-pm minimarket near Highway 99 on Wednesday. The father is driving a 1992 four-door Toyota sedan, possibly a Tercel, with California license plate 5GBD911. Police did not release his name. Lt. Ron Reid said the father is not suspected of any wrongdoing and authorities only want to check on his and his daughter's welfare. Reid said the father and the mother live apart in San Leandro but are on good terms. He said the father picked up the mother and daughter Wednesday and they planned to pick up money in Tracy before leaving the state. "How they got from (there) to Turlock, I don't understand," Reid said. He said the couple was driving on Highway 99 when they stopped about 6:30 p.m. at the convenience store so the woman could use the bathroom. When the woman came back, Reid said, the couple argued after the woman said she had changed her mind. The man mentioned having a knife but did not make a threat, and the woman did not see a knife. The woman went to use a phone to call the police and the man left with their daughter. Reid said the couple speaks only Spanish. Reid said a "be on the lookout" alert has been issued in Stanislaus County and in the Tracy and San Leandro areas for the father and daughter. If residents see the car, they are asked to call Turlock police at 668-1200.