Tom Cruise turned 50 today (03.07.12) - days after it emerged his marriage is over.

The 'Mission: Impossible' star was pictured looking glum by his helicopter in Iceland, where he is currently working, and was likely pre-occupied by his personal woes, which saw wife Katie Holmes file for divorce on Thursday (28.06.12) after five years of marriage.

In her documents, which were filed in New York, Katie claimed her marriage was ''irretrievably'' broken for at least six months.

However, sources close to Tom says Katie's version of events are baffling, as he had ''no idea'' she was going to legally end their marriage.

Katie - who wants sole custody of the couple's six-year-old daughter, Suri - also claimed both she and Tom have been residents of New York for ''at least two years'', even though their main family home is in Beverly Hills, California.

The 33-year-old beauty must establish legal residency in New York in order for the court to have jurisdiction, which is something she wants because New York courts are more likely to grant her sole custody of Suri.

However, 49-year-old Tom - who also has two children, Isabella, 19, and 17-year-old Connor, with second wife Nicole Kidman - will fight the residency claim and wants the legal proceedings switched to California, where courts are more likely to grant joint custody of a child.