By peoplestaff225
Updated July 26, 2007 09:26 PM

Britney Spears’ impromptu trip to Las Vegas has apparently drawn the ire of ex-husband Kevin Federline, and could represent a potential violation of California law as well as the child-custody agreement which governs the former couple. Together with her brother Bryan and her two children — Sean Preston, 22-months, and Jayden James, 10-months — Britney checked into the Wynn Las Vegas yesterday afternoon, directing the resort staff to child-proof her room before her arrival.

The pop star checked out at 5:30 p.m. today, however, after her bodyguard allegedly scuffled with a photographer, accidentally hitting Sean Preston in the process, and Kevin ‘demanded‘ that his ex-wife return with the children to California. Under the laws of that state, neither parent is allowed to take a child across state lines without written permission from the other, or by obtaining a court order. Says a source:

Source: People, US Weekly