A San Diego-area woman is working to honor the memory of a stranger who died hours after paying for her groceries and asking her to "pay it forward."

KNSD-TV in San Diego reports (http://bit.ly/1Prk0aK ) that 28-year-old Matthew Jackson, of Oceanside, was killed in a crash on Nov. 11, less than 24 hours after he met Jamie-Lynne Knighten.

Knighten was ahead of Jackson in line to pay for her groceries with her crying infant when her card was declined. Jackson offered to foot the more than $200 bill asking that she help someone else in return.

Knighten called his employer to praise Jackson, only to find out he had died. She says she is working to further honor the man's legacy and is encouraging others to pay it forward.

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This story has been corrected to reflect that Jackson and Knighten met on Nov. 10 and that Knighten is from the San Diego area.

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Information from: KNSD-TV, http://www.nbcsandiego.com/index.html