Chinese police have launched a manhunt for an arsonist suspected of starting a bus fire that killed 14 people and injured 32 others on Tuesday, state media reported.

Bus fires are not uncommon in China, where regulators have blamed some recent blazes on flawed auto design. In 2013, a bus fire blamed on a suicidal man killed 47 in the coastal city of Xiamen.

Police are searching for Ma Yongping, the suspected arsonist, looking in particular for the three cars he owns, the official Xinhua news agency reported.

Police are still investigating and state media did not mention any possible motives.