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It sounds like you also had double yarn overs in the previous row? In this row you'll possibly drop one loop of the yo, knit the other loop, k1, drop one loop of the yo, knit the other and then pass the rightmost stitch of the three on the right hand needle over the other two. (They number the sts 1-2-3 as they appear on the right needle so #3 gets passed over # 1 and 2.)
If there are no yarn overs in the previous row but only the double increase, k1p1k1 in a stitch, I'm puzzled too. Can you quote the entire 2 rows only? or can you give us a link to the pattern or a pattern name?