Disaster and emergency situations require a timely and well-coordinated response. In recent years information and communication technologies (ICT) have been used to engage volunteers as increasingly invaluable resources which complement professional response teams (e.g. medical, police, fire fighter). With a focus on privacy as an integral enabler and precondition for volunteers to take part in such ICT systems, we introduce a privacy-conserving spatial crowdsourcing approach tailored for emergency and disaster response.