Gaza (dpa) - Israel has arrested Hassan Yousef, a high-ranking member of the radical Islamist Hamas movement, in an overnight raid at his home in the West Bank, according to a spokeswoman from Israel‘s defence forces.The Times of Israel said Yousef was detained in Ramallah in one of a number of raids. In all, 32 Palestinians were detained for suspected involvement in terrorist activities and violent rioting, the paper said citing security forces.Palestinian media reports said that raids in the West Bank saw a number of Hamas leaders arrested.