A personal tragedy has forced Helena Bonham Carter to temporarily stop work on Terminator Salvation.

The 42-year-old, who had been filming in New Mexico, has reportedly been given indefinite leave after a fatal minibus crash.

The incident, which happened Wednesday in South Africa, killed four of Helena’s relatives. The group had been on safari when the tire of their VW van supposedly blew out, causing the vehicle to roll.

Although Fiona Bonham Carter (the actress’ cousin) survived the accident, her 14-year-old son, mother, stepfather and sister-in-law were all killed. Fiona’s 16-year-old son and brother also survived.

Helena and boyfriend Tim Burton are both said to be traveling to Britain to support the family.