He said "I'll hit you up later". What does this mean?

I called a guy I know from work to see how he was doing. I found out someone passed in his family and he went to the funeral. He also went to work once he got back from work. he talked to me for at least 5 to 10 minutes. then he said I'll hit you up later. what does this mean? was this a brush off?
He said "I'll hit you up later". What does this mean?
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