In this paper, we provide some Ostrowski-type integral inequalities for functions whose second derivatives belongs to the Lebesgue L q spaces using the Katugampola fractional integrals. We also introduced some new inequalities of Ostrowski-type for functions whose second derivatives in absolute value at some powers are strongly (s, m)-convex with modulus µ 0 (in the second sense). Our results are generalizations of some earlier results in the literature.