Zlatan Ibrahimovic scored twice as Inter crushed bottom side Reggina 3-0 on Sunday to maintain their seven-point lead at the Serie A summit. Esteban Cambiasso opened the scoring after six minutes in controversial fashion. The Argentinean midfielder was picked out by Dejan Stankovic's superb back-heel flick to fire home from eight yards. Television replays suggested that he was in an offside position when he gathered Stankovic's pass. Swedish striker Ibrahimovic doubled Inter's lead on 11 minutes when he converted a penalty after Carlos Valdez brought down Brazilian winger Mancini. He scored his second of the night in the 55th minute after a brilliant individual effort to put the match beyond doubt. Inter, who seek to win a fourth straight Serie A title, are on top of the table with 69 points, seven ahead of second-placed Juventus. Watch the match's goals: