A major earthquake has hit much of southwestern Mexico. The US Geological Survey says it had a magnitude of 7.4 and was centred near the border of Guerrero and Oaxaca states, not far from Acapulco near the Pacific coast. Our correspondent in the capital Mexico City, Will Grant, described the situation in Guerrero state.

The governor of that state has already released a statement or spoken to local television down there, saying that around 500 houses have been damaged; some of them have collapsed. That said, there are no reports at this stage of casualties. So although it was clearly a very powerful seismic event and a jolt that really shook up a large part of the country, there is something - a growing sense now - that perhaps a disaster has been averted. Although that said that these are still of the early hours after the event, and still I think both the authorities and journalists on the ground are trying to get a clearer picture of exactly how bad it's been.

French security camera footage of the killing of three children and a rabbi in Toulouse on Monday shows the gunman shooting a seven-year-old girl at point-blank range. The video, which is in the possession of the authorities, shows the gunman grabbing Myriam Monsonego by the hair as she tried to escape. When his weapon jams, he calmly pulls out a second weapon, which he then uses to kill her. From Paris, Christian Fraser.

Police have been busy building a psychological profile of the killer today. The interior minister revealed that he was determined in his movements and also a man who by consequence, he said, was very cruel. They have ruled out one line of the inquiry that linked to three disgraced paratroopers who had links to far-right extremism and who were sacked or discharged from a local base in 2008, which means they are no nearer determining the identity of this gunman.