There were a series of lapses in the renovation of the pedestrian bridge in Gujarat's Morbi which collapsed four days after it was reopened, killing 135 people on Sunday, the police have told a court, seeking the custody of those accused. The materials used for the renovation were "substandard" and the entire structure was vulnerable. There was no structural audit of the 143-year-old bridge before its renovation. Many of the cables of the suspension bridge were rusty, including the part where it broke. The incident would not have happened had the cables been repaired.