Inter strengthened their grip on third place in Serie A with an important yet unconvincing 3-1 win over lowly Frosinone on Sunday evening.
Inter started well and took a deserved lead after 18 minutes. Danilo D'Ambrosio whipped in a dangerous cross on to the head of Radja Nainggolan, who directed the ball into the far corner with impressive accuracy.
The visitors doubled their lead 15 minutes later, as Ivan Perisic converted from the penalty spot after Raman Chibsah brought down Milan Skriniar in the box.
Inter looked to be going through the motions in the second-half and their lacklustre approach cost them a goal as Frosinone pulled one back on the hour mark through Francesco Cassata, whose strike from distance had just enough power to get past Samir Handanovic.