A regular customer of a Be'er Sheva bank branch slit a bank clerk's throat on Sunday morning without uttering a word, police said.

The Mizrahi-Tefahot clerk, Avi Iluz, was taken to the city's Soroka Medical Center in serious but stable condition.

Police arrested a suspect, who admitted to committing the assault. Under questioning, he repeatedly changed his motive.

Police say the man, in his 60s, entered the branch on Ha'atzma'ut Street and waited his turn. Then, without saying a word, he approached Iluz and attacked him with a knife.

Be'er Sheva police chief Yossi Cohen said the suspect had not had any financial disputes with the bank. Branch manager Yaniv Haddad confirmed this.

Under interrogation, the man gave conflicting motives for the assault, police said. He does not have a criminal record, and police are considering requesting that he be sent for a psychiatric examination. He will appear in court tomorrow for a remand hearing, and police are expected to ask that he remain in custody.