A Florida couple has cashed in the second of three winning tickets from last month's $1.6 billion Powerball jackpot.

Seventy-year-old Maureen Smith and 55-year-old David Kaltschmidt will take the lump sum payment of about $327.8 million.

Kaltschmidt said at a news conference Wednesday that they didn't inform family members until last week that they won.

The winning ticket was purchased at a Publix grocery store in Melbourne Beach. The other two winning tickets for the Jan. 13 drawing were bought in Munford, Tennessee, and Chino Hills, California.

John and Lisa Robertson of Munford, Tennessee, cashed in their ticket last month, also taking the lump sum. The winners in California have not publicly come forward yet.