The Murderer's Appearance (1)

After returning home, Adrienne immediately went to take a bath, but Jefferson kept busy and made a call. "Find out the identity of the fourth victim as soon as possible." At the other end of the phone, someone replied, "Jefferson, we just confirmed a few minutes ago that the fourth victim was a staff member at Chatterton Town Bank in Paramount Area." The first victim was a vegetable vendor, the second was an ordinary housewife, the third was a real estate agent, and the fourth victim worked at a bank. What was the connection between the four victims? Jefferson tried to connect the dots. A real estate agent dealt with the sale of houses, and a bank teller could approve loans. That was the only conceivable link that Jefferson could come up with. However, he couldn't be sure. Jefferson ordered again, "Check if there is any real estate leased or rented under the second victim's name." If the relationship between the three could be established, what was their relation to the first victim?