[cnn-photo-caption image=http://i.cdn.turner.com/cnn/2010/CRIME/02/22/california.missing.family/story.mcstay.split.courtesy.jpg caption="Evidence at Joseph and Summer McStay's home suggests they hadn't planned on being gone long, authorities say." width=300 height=169]
A close relative of a missing Southern California family fears they may have been kidnapped.
"My gut feeling is telling me that they are being held against their will in some way," said Michael McStay, brother of Joseph McStay. "That's my personal opinion. That's what I think."
Joseph McStay, 40, his wife, Summer, 43, and their two children, Gianna, 4, and Joseph, 3, have not been seen or heard from since February 4. Concerned relatives contacted authorities, who then conducted a welfare check of the family's home on February 15, the San Diego County sheriff's office said.
An SUV belonging to the family was found abandoned near the Mexican border. The McStays' home is in Fallbrook, an unincorporated area about 45 miles north of San Diego.
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