Complete the paragraph with the past simple, past perfect simple

Complete the paragraph with the past simple, past perfect simple or past perfect continuous form of the verbs in brackets.
The police 1) ______________ (investigate) the crime for thirteen weeks before finding a suspect. They found that the door to the villa 2) ______________ (not be) damaged and realised that the burglar 3) ______________ (use) a key to get in. The police think that the burglar 4) ______________ (look) for the jewellery for hours because every room was untidy. The police also found footprints in the house. At first they didnt lead anywhere but then they found the same footprints outside. They 5) ______________ (follow) them for twenty minutes when they saw a man jogging past them. When they looked at the ground they saw that he had the same footprints they were following. They realised that the neighbour 6) ______________ (steal) the jewellery!